Writing Effective ChatGPT Prompts: Best Practices and Character Choices

ChatGPT, powered by OpenAI's powerful language model, offers a versatile tool for natural language interactions. Crafting effective prompts is crucial to obtain the desired responses from the model. This short article outlines best practices for writing ChatGPT prompts and discusses the choice of characters.

1. Clarity and Context:

Begin your prompts with a clear and concise statement to provide context for the desired response. Clearly communicate the information you seek, allowing the model to better understand and generate relevant content.

Example:

Unclear: "Tell me about it."

Clear: "Describe the environmental impact of renewable energy sources."

2. Use Specificity:

Be specific in your prompts to guide the model toward more precise responses. If you're looking for detailed information or answers, ask questions that require specific knowledge.

Example:

Vague: "Discuss technology."

Specific: "Explain the key features and benefits of blockchain technology."

3. Be Mindful of Context Length:

ChatGPT has token limits, so it's essential to consider the length of your prompt. If your prompt is too lengthy, the response may be cut off. Aim for concise and well-structured queries.

Example:

Long: "In the following paragraph, analyze the societal impacts of advancements in artificial intelligence, including both positive and negative aspects."

Concise: "Discuss the societal impacts of AI advancements."

4. Avoid Unnecessary Complexity:

While it's crucial to be specific, avoid overly complex or convoluted prompts. Simplicity often leads to better comprehension by the model.

Example:

Complex: "Elaborate on the intricate interplay between technological innovation and socio-economic evolution in the modern era."

Simple: "Explain how technology impacts society."

5. Character Choices:

Choose characters that align with the context of your prompts. Backslashes and forward slashes can generally be used interchangeably, but be aware of any special characters that may have specific meanings in your programming context.

Example:

Neutral: "Tell me about your hobbies."

Context-Specific: "Describe your favorite programming language (e.g., Python)."

Conclusion:

Writing effective ChatGPT prompts involves balancing clarity, specificity, and conciseness. By adhering to these best practices, you can enhance your interactions with the model and obtain more relevant and coherent responses. Experiment with different prompts to find the style that works best for your specific use case, and always stay mindful of the unique characteristics of the language model you are working with.

Written by AI )

GPT4free

I was taken aback to discover online projects that leverage the free Python library GPT4free, only to charge users for access. One such project even introduced a subscription model for tokens, a practice I find perplexing. It seems counterintuitive to monetize something readily available to the public, especially when it relies on third-party web services granting access to ChatGPT.

Contrary to the claims of uninformed journalists, GPT4free merely acts as an API to the web interfaces of these services and does not involve any hacking or vulnerability in the OpenAI API. The distinction lies in the usage of web versions, which inherently differs from the paid original OpenAI API. This variance introduces drawbacks such as limitations and potential blocks based on geographical IP.

It's worth noting that a free solution like GPT4free doesn't guarantee 100% stability. It raises questions about the rationale behind individuals opting to pay for it when anyone can access it for free. The disparity between paid and free versions, coupled with the inherent limitations of the latter, underscores the importance of understanding the nuances of these offerings in the rapidly evolving landscape of AI technologies.

Links:

Free no registration demo : https://gpt4free.io/reverse-proxy-api

https://github.com/xtekky/gpt4free/blob/main/README.md

Personal free telegram bot of GPT4free - https://habr.com/ru/articles/778620 ( translate from russian)

Demystifying Email Security: Understanding DNS/Route-Based Security and API Integration

 

In today's interconnected digital landscape, securing email communications is more critical than ever. With cyber threats on the rise, organizations need robust strategies to safeguard their email systems from phishing attacks, spoofing, and other malicious activities. Two popular approaches to enhance email security are DNS/Route-Based Email Security and Email Security via API.

DNS/Route-Based Email Security:

What is it? DNS/Route-Based Email Security involves fortifying email communication channels by configuring security settings at the DNS or mail routing level. This approach focuses on preventing unauthorized access, verifying sender authenticity, and ensuring the integrity of email content during transit.

How does it work?

1. SPF (Sender Policy Framework): Validates that incoming emails originate from authorized servers, preventing email spoofing.
2. DKIM (DomainKeys Identified Mail): Ensures that the content of emails remains unaltered during transmission by adding digital signatures.
3. DMARC (Domain-based Message Authentication, Reporting, and Conformance): Enhances SPF and DKIM by providing policies for email authentication and reporting.

Purpose: By implementing DNS/Route-Based Email Security, organizations can significantly reduce the risk of phishing attacks and unauthorized access, creating a more secure email environment.

Email Security via API:

What is it? Email Security via API involves integrating security measures directly into applications or systems through Application Programming Interfaces (APIs). This approach enables organizations to customize and automate their email security protocols.

How does it work?

1. API Integration: Organizations can leverage third-party email security APIs or develop custom solutions to integrate security features seamlessly into their existing systems.
2. Content Filtering: APIs can be programmed to scan email content for malicious elements, attachments, or links, providing an additional layer of protection.
3. Threat Detection: Automated threat detection through APIs enhances the ability to identify and block emerging email threats in real-time.
4. Encryption: APIs can facilitate end-to-end encryption, safeguarding sensitive information from unauthorized access.

Purpose: Email Security via API empowers organizations to tailor their email security measures, automate responses to potential threats, and stay ahead of evolving cybersecurity challenges.

The Synergy of Both Approaches:

While DNS/Route-Based Email Security and Email Security via API offer distinct advantages, they are often most effective when used together. DNS-based measures provide a foundational layer of authentication, while API integration allows for dynamic and customizable responses to specific security needs.

In conclusion, a multi-layered approach to email security is crucial in the modern digital landscape. By understanding and implementing DNS/Route-Based Security and Email Security via API, organizations can significantly enhance their defenses against a wide array of email-related threats, fostering a safer and more secure communication environment.

Article by me and GPT )

Move from ITIL v3/2011 to ITIL 4

A lot changed in the move from ITIL v3/2011 to ITIL 4. Not only did the focus move from IT service management (ITSM) processes to service management practices, the way the latter are described changed from objective statements to purpose statements. This article shares all 34 of the ITIL 4 management practices and their purposes.

General management practices

There are 14 general management practices:

1. Architecture management – “The purpose of the architecture management practice is to explain the different elements that form an organization. This practice explains how the elements interrelate to enable the organization to effectively achieve its current and future objectives. It provides the principles, standards, and tools that enable an organization to manage complex change in a structured and agile way.
2. Continual improvement – “The purpose of the continual improvement practice is to align the organization’s practices and services with changing business needs through the ongoing improvement of products, services, practices, or any element involved in the management of products and services.”
3. Information security management – “The purpose of the information security management practice is to protect the information needed by the organization to conduct its business. This includes understanding and managing risks to the confidentiality, integrity, and availability of information, as well as other aspects of information security such as authentication and non-repudiation.”
4. Knowledge management – “The purpose of the knowledge management practice is to maintain and improve the effective, efficient, and convenient use of information and knowledge across the organization.”
5. Measurement and reporting – “The purpose of the measurement and reporting practice is to support good decision-making and continual improvement by decreasing the levels of uncertainty. This is achieved through the collection of relevant data on various managed objects and the valid assessment of this data in an appropriate context. Managed objects include, but are not limited to, products and services, practices and value chain activities, teams and individuals, suppliers and partners, and the organization as a whole.”
6. Organizational change management (OCM) – “The purpose of the OCM practice is to ensure that changes in an organization are implemented smoothly and successfully, and that lasting benefits are achieved by managing the human aspects of the changes.”
7. Portfolio management – “The purpose of the portfolio management practice is to ensure that the organization has the right mix of programmes, projects, products, and services to execute the organization’s strategy within its funding and resource constraints.”
8. Project management – “The purpose of the project management practice is to ensure that all projects in the organization are successfully delivered. This is achieved by planning, delegating, monitoring, and maintaining control of all aspects of a project, and ensuring motivation for the people involved.”
9. Relationship management – “The purpose of the relationship management practice is to establish and nurture the links between the organization and its stakeholders at strategic and tactical levels. It includes the identification, analysis, monitoring, and continual improvement of relationships with and between stakeholders.”
10. Risk management – “The purpose of the risk management practice is to ensure that the organization understands and effectively handles risks. Managing risk is essential to ensuring the ongoing sustainability of an organization and co-creating value for its customers. Risk management is an integral part of all organizational activities and therefore central to the organization’s service value system (SVS).”
11. Service financial management – “The purpose of the service financial management practice is to support the organization’s strategies and plans for service management by ensuring that the organization’s financial resources and investments are being used effectively.”
12. Strategy management – “The purpose of the strategy management practice is to formulate the goals of the organization and adopt the courses of action and allocation of resources necessary for achieving those goals. Strategy management establishes the organization’s direction, focuses effort, defines or clarifies the organization’s priorities, and provides consistency or guidance in response to the environment.”
13. Supplier management – “The purpose of the supplier management practice is to ensure that the organization’s suppliers and their performances are managed appropriately to support the seamless provision of quality products and services. This includes creating closer, more collaborative relationships with key suppliers to uncover and realize new value and reduce the risk of failure.”
14. Workforce and talent management – “The purpose of the workforce and talent management practice is to ensure that the organization has the right people, with the appropriate skills and knowledge, in the correct roles to support its business objectives. This practice covers a broad set of activities focused on successfully engaging with the organization’s employees and people resources, including: planning, recruitment, onboarding, learning and development, performance measurement, and succession planning.”

There are 17 service management practices:

1. Availability management – “The purpose of the availability management practice is to ensure that services deliver the agreed levels of availability to meet the needs of customers and users.”
2. Business analysis – “The purpose of the business analysis practice is to analyze a part or the entirety of a business, define its needs, and recommend solutions to address these needs and/or solve a business problem. The solutions must facilitate value creation for the stakeholders. Business analysis enables an organization to communicate its needs in a meaningful way and express the rationale for change. This practice enables an organization to design and describe solutions that enable value creation, in alignment with the organization’s objectives.”
3. Capacity and performance management – “The purpose of the capacity and performance management practice is to ensure that services achieve the agreed and expected levels of performance and satisfy current and future demand in a cost-effective way.”
4. Change enablement – “The purpose of the change enablement practice is to maximize the number of successful service and product changes by ensuring that risks have been properly assessed, authorizing changes to proceed, and managing the change schedule.”
5. Incident management – “The purpose of the incident management practice is to minimize the negative impact of incidents by restoring normal service operation as quickly as possible.”
6. IT asset management – “The purpose of the IT asset management practice is to plan and manage the full lifecycle of all IT assets, to help the organization: maximize value; control costs; manage risks; support decision-making about the purchase, re-use, retirement, and disposal of IT assets; and meet regulatory and contractual requirements.”
7. Monitoring and event management – “The purpose of the monitoring and event management practice is to support the normal operation of service components by observing, analyzing, and appropriately responding to changes of state in those components.”
8. Problem management – “The purpose of the problem management practice is to reduce the likelihood and impact of incidents by identifying actual and potential causes of incidents, and managing workarounds and known errors.”
9. Release management – “The purpose of the release management practice is to make new and changed services and features available for use.”
10. Service catalog management – “The purpose of service catalogue management practice is to provide a single source of consistent information on all services and service offerings, and to ensure that it is available to the relevant audience.”
11. Service configuration management – “The purpose of the service configuration management practice is to ensure that accurate and reliable information about the configuration of services, and the configuration items that support them, is available when and where it is needed. This includes information on how configuration items are configured and the relationships between them.”
12. Service continuity management – “The purpose of the service continuity management practice is to ensure that the availability and performance of a service are maintained at sufficient levels in case of a disaster. The practice provides a framework for building organizational resilience with the capability of producing an effective response that safeguards the interests of key stakeholders and the organization’s reputation, brand, and value-creating activities.”
13. Service design – “The purpose of the service design practice is to design products and services that are fit for purpose and use, and that can be delivered by the organization and its ecosystem. This includes planning and organizing people, partners and suppliers, information, communication, technology, and practices for new or changed products and services, and the interaction between the organization and its customers.”
14. Service desk – “The purpose of the service desk practice is to capture demand for incident resolution and service requests. It should also be the entry point and single point of contact for the service provider for all users.”
15. Service level management – “The purpose of the service level management practice is to set clear business-based targets for service levels, and to ensure that delivery of services is properly assessed, monitored, and managed against these targets.”
16. Service request management – “The purpose of the service request management practice is to support the agreed quality of a service by handling all predefined, user-initiated service requests in an effective and user-friendly manner.”
17. Service validation and testing – “The purpose of the service validation and testing practice is to ensure that new or changed products and services meet defined requirements. The definition of service value is based on input from customers, business objectives, and regulatory requirements and is documented as part of the design and transition value chain activity. These inputs are used to establish measurable quality and performance indicators that support the definition of assurance criteria and testing requirements.”

For more detailed information I would recommend visiting ITSM. tools

They are an independent IT service management website – home of best practice, high-quality, and freely available ITSM content written by ITSM practitioners, ITSM consultants, ITSM trainers, ITSM tools vendors, and IT industry analysts. 

AI helps to prevent accidental data exposure

 Hornetsecurity releases 365 Total Protection Plan 4 for Microsoft 365 with AI Recipient Validation that prevents misdirected emails.

AI Recipient Validation is one of 365 Total Protection’s newest features, providing security and compliance managers with true visibility into how often employees are exposed to potentially misdirected emails and how they respond to them. It protects the end user by providing a warning when an email they are about to send appears to be misguided or contain sensitive information. The user can decide to either adjust their email or continue to send without modification.

Additionally, this new AI-based service continuously updates its understanding of the user’s email communication patterns by learning user behaviour and responses. It then automatically adjusts warnings for outgoing emails and prevents users from receiving similar warnings multiple times.

Read more:

https://www.hornetsecurity.com/en/press-releases/launch-of-365tp-plan4-with-airv

Reminder
Tips for identifying malicious emails

Professional cyber attacks via email are very difficult to detect, but there are a few clues for detecting fraud. First of all, if a fraudulent email is suspected, Verify whether the sender address actually matches the original domain. Consider carefully whether the sender is really an acquaintance or business partner of yours or whether the email address only resembles that of the actual person. Check for spelling and grammar mistakes, especially if the email is supposed to come from a reputable company. An impersonal form of address in the cover letter, such as “Dear Ladies and Gentlemen,” is another clue. Be careful with links or buttons placed in emails, because as a “normal user” it is very difficult to check whether the apparent link target is actually correct. In case of doubt, it is safest not to click on any attached link.

Cybercrime Statistics 2023

As you will see, unlike most horror movie franchises that get progressively less frightening year after year (and eventually become silly), the story here has become even more terrifying.

• Approximately 43% of cyberattacks target SMBs. [Source]
• 60% of SMBs experienced at least one cyberattack in the last year, and 18% of them experienced six or more. [Source]
• 67% of SMBs said that they are more concerned about IT security now than a year ago. [Source]
• 32% of SMBs are allocating less than 5% of their IT budget towards IT security, which is below the recommended minimum amount. [Source]
• The average cyberattack insurance claim cost for SMBs is now $139,000 per claim (all figures in this article are USD), which is more than double the 2021 level. [Source]
• Cyber insurance premium costs have increased by an average of 28%, and many companies are finding it harder to get coverage. [Source]
• The financial toll of a cyberattack on SMBs now ranges from $120,000 to $1.24 million per incident, depending on factors such as the number of compromised records involved. [Source]
• The financial toll of a cyberattack on larger organizations has climbed to $4.54 million per incident — the highest number ever recorded. [Source]
• The number of malware attacks has reached 5.5 billion per year, which is 2% higher than the previous year. [Source]
• Zero-hour threats, which exploit vulnerabilities before they are known and patched, now account for 54% of all threats. [Source]
• Over 850,000 domain names per year are now reported for phishing. [Source]
• 71% of businesses say they have fallen victim to ransomware attacks. [Source]
• Approximately 50,000 websites are hacked each day, and there is an attack on a website every 39 seconds. [Source]
• 18% of all websites are alleged to contain critical severity threats, and 4.1 million websites contain malware at any given time. [Source]
• 17% of all cyberattacks are Business Email Compromise (BEC) attacks, in which hackers try and trick corporate victims into sending money or divulging confidential company information. [Source]
• 74% of organizations are at least moderately vulnerable to insider threats. [Source]
• The average ransomware payment has surged to $4.4 million. [Source]
• It takes an average of 277 days — or roughly 9 months — for businesses to identify and report a data breach. [Source]
• The number of IoT malware attacks annually reported has reached 112.3 million instances — an 87% year-over-year increase. [Source]
• The global cost of cybercrime is predicted to reach $8 trillion annually in 2023. [Source]

Source

Notepad Tricks: Cool Notepad tricks for Windows

Notepad, the text editor that comes bundled in Windows is an excellent tool for text editing. However, that is not the only thing which Notepad is famous for. It is also famous for its tricks and hacks. Here is a roundup of some of the best and coolest tricks that you can try using the Windows Notepad.

Matrix falling code effect: Notepad CMD (.BAT) trick

Inspired by the movie Matrix, this falling code trick is extremely popular on social networking websites. Copy and paste the code given below in Notepad, click on File>Save As>select Save as type to All Files and save the file as "Matrix.bat" or *.bat.

@echo off
color 02
:tricks
echo %random%%random%%random%%random%%random%%random%%random%%random%
goto tricks

Matrix Falling Code Effect: Notepad Trick

Upon running the bat file, you will see the "Matrix falling code" effect.

VBS trick for a harmless virus: Make your keyboard type any message any times continuously

This VBS trick can make your keyboard type any message continuously. Open Notepad, copy and paste the code given below, click on File>Save As>select Save as type to All Files and save the file as Tricks.vbs or *.vbs. Upon running the VBS file, your message will be typed out continuously in a Notepad window. To change the number of times the message is to be displayed, change the 10 (shown in italics) in the code below to any number you want. To change the message, edit the part of the code given in bold. To stop this script while it is being executed, open Task Manager and end the WScript.exe (Microsoft Windows Based Script Host) process. In the worst case when you select too large an upper limit or if the system becomes unresponsive, you will need to restart your computer to stop this; so only try this after closing all important programs and avoid setting too large an upper limit.

Set wshShell = wscript.CreateObject("WScript.Shell")
wshShell.Run "notepad"
Dim x
x=1
do while x<=10
wscript.sleep 500
wshshell.sendkeys "Your message here. Example: This is a Virus. You have been infected. "
x=x+1
loop

You should ideally try this trick in front of your unsuspecting friends asking them for help to see the fun.

A harmless and funny virus with Notepad: Continuously eject CD/DVD drives

This VBS trick will create a code which will continuously eject all your connected optical drives for 25 seconds. If you put them back in, it will pop them out again. To change the time for execution of the script, replace 5 (given in bold) in the code with any number. The time for execution will increase in multiples of 5 seconds. Example: To run the script for a minute (60 seconds), replace 5 with 12. Copy this code, paste it in Notepad, click on File>Save As>select Save as type to All Files and save the file as Virus.vbs or *.vbs.

Set oWMP = CreateObject("WMPlayer.OCX.7")
Set colCDROMs = oWMP.cdromCollection
Dim x
x=1
do while x<=5
if colCDROMs.Count >= 1 then
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next
End If
wscript.sleep 5000
x=x+1
loop

Double click to open this file and you will be impressed by this awesome trick. To stop the script while it is being executed, you will need to open Task Manager and end the WScript.exe (Microsoft Windows Based Script Host) process. In the worst case when you select too large a time limit or if the system becomes unresponsive, you will need to restart your computer to stop this; so only try this after closing all important programs and avoid setting too large a time limit.

Create Fake Error Messages

You can use this trick to create a fake error message with the title of your choice. Just open Notepad, copy and paste the exact code given below, click on File>Save As>select Save as type to All Files and save the file as Error.vbs or *.vbs. Each time you open the file, the fake error message will be displayed.

A=Msgbox("Add your message here.",0+18,"Add Title here.")

Example: A=Msgbox("I am tired and don't want to work anymore.",0+18,"Tired PC.")

Shutdown your computer giving a fake reason

You can use this trick to shut down your computer giving the reason of your choice. Just open Notepad, copy and paste the exact code given below, click on File>Save As>select Save as type to All Files and save the file as Shutdown.bat or *.bat. Each time you open the file, your PC will shut down after the time you have selected with the error message of your choice displayed. Be sure to try this trick only after saving your work and closing all important files and applications as your system will shutdown after this.

shutdown.exe -s -t 30 -c "Your message here."

The code above will provide 30 seconds before shutting down your computer. To change the time provided in seconds before shutdown, replace 30 with any number you want.

Example: shutdown.exe -s -t 300 -c "I don't want to work. I want to sleep."

Make your computer speak what you type

To make your computer speak what you input to it with some VBScript coding in Notepad, see this post for details.

Make your computer speak any message any times continuously

You can use this trick to make your computer speak any message continuously. Just open Notepad, copy and paste the exact code given below, click on File>Save As>select Save as type to All Files and save the file as Message.vbs or *.vbs. When you open the file, your PC will speak the message that you have added in the code continuously.

Dim Message, Speak, i
i=1
Message="Your message here."
Set Speak=CreateObject("sapi.spvoice")
do while i<=5
Speak.Speak Message
i=i+1
loop

To change the message, edit the part of the code given in bold. The code above will speak the message of your choice 5 times. To change the number of times the message is spoken, replace 5 (given in italics) in the above code with any number you want. To stop this script while it is being executed, open Task Manager and end the WScript.exe (Microsoft Windows Based Script Host) process. In the worst case when you select too large an upper limit or if the system becomes unresponsive, you will need to restart your computer to stop this; so only try this after closing all important programs and avoid setting too large an upper limit.

Make a personal diary (Log) with Notepad (Easter egg)

Notepad Diary

You can use this trick to create a personal log with Notepad which will automatically include the current date and time before your note. To do so, open Notepad and type .LOG in capital letters and press Enter. Save the file. Now, every time you open this file, Notepad will automatically insert the current time and date before the note. Just enter your note and save the file each time after making an entry.

Password protect folders without any software

To password protect folders with some basic batch file coding in Notepad, see this post for details.

Make your keyboard lights blink in a rhythmic manner

To make your keyboard lights blink in a rhytmic disco like manner with some VBScript coding in Notepad, see this post for details.

Make your computer welcome you

To make your computer welcome you in its own computerized voice with some VBScript coding in Notepad, see this post for details.

The source: https://www.tweakandtrick.com/2011/02/notepad-tricks-windows-7-xp-vista.html

Windows Keyboard shortcuts

 

Useful Keyboard Shortcuts for Windows 

While most of us are already aware of obvious keyboard shortcuts like “Alt+F4” and “Ctrl+C”, there are some obscure shortcuts which most of us tend to overlook. These keyboard shortcuts are not only useful for the average PC user but for advanced users as well. This article contains many such amazing keyboard shortcuts which if used properly could save a lot of time and effort. So let's get started.

Windows key+D: This shortcut is the keyboard equivalent of “Show the Desktop”. It is useful for quickly minimizing every open window when someone walks in and you are doing some private work.


Ctrl+Shift+Esc: This shortcut directly starts the Task Manager. While Alt+Ctrl+Del was used to bring out the Task Manager in Windows XP and earlier versions; in Windows 11, Windows 10, Windows 8.1, Windows 8 and Windows 7, it just brings up the lock this computer screen.

Ctrl+Click: This shortcut is useful for opening a link in a background tab. This is useful when you have to load a page without leaving the current one.

Alt+Print Screen: takes the screenshot of the current active window as opposed to just Print Screen which takes the screenshot of the entire screen.

Shift+Click for Yes to All and No to All: If you have a lot of dialog boxes asking yes and no question, just shift+click Yes or No on one to yes all or no all.

Ctrl+C on an error dialog box to copy its contents: Suppose your computer is giving an error message and you want to copy its contents to send to the support guy, what do you do? Just press Ctrl+C while the dialog box is highlighted and its contents will be copied to your clipboard.

Ctrl+T: This keyboard shortcut opens a new tab in internet browsers.

Ctrl+Shift+T: Reopens the last closed tab.

Ctrl+Shift+N: This shortcut opens a new incognito window in Google Chrome.

Ctrl+Shift+P: Opens a new private window in Mozilla Firefox.

Shift+Enter after typing search keywords in web browsers opens a new tab with the search results in a new window.

Ctrl+W: This shortcut closes the current tab in your browser quickly.

Ctrl+Backspace: This shortcut deletes the last word you have typed. It is useful in case you typed in a wrong word and want to delete it quickly.

Ctrl+Left or Right Arrow key: This shortcut allows you to move the cursor one word at a time instead of the default one character at a time.

Ctrl++: This shortcut allows you to zoom in web pages in web browsers. Useful when text on a web page is too small to read properly. Ctrl+Scroll wheel can also zoom in documents, file thumbnails and icons in Windows 10, Windows 8.1, Windows 8, Windows 7 and Windows Vista.

Ctrl+-: This shortcut does the reverse of the previous shortcut.

Ctrl+0: Reset the webpage's zoom.

Windows key+M: Minimizes all the open windows.

Ctrl+L: This shortcut allows you to quickly jump to the address bar of your web browser.

Windows key+Pause/Break: Quickly open the system properties dialog box.

Ctrl+Shift+Delete: This shortcut opens the option to delete your browser's history, cookies, cache and other details that it stores while you browse the internet. This shortcut is extremely useful for the privacy conscious.

Windows Key+L: This shortcut locks your computer.

Ctrl+H: makes the history appear.

CTRL+B: Bold. CTRL+U: Underline. CTRL+I: Italic. Useful for text editors and word processors.

Alt+Select: This shortcut allows you to select rectangular blocks of text in Word processors, something that is not possible with simple select.

F2: Allows you to rename the selected file.

Holding Shift while inserting a device with removable storage prevents automatic run.

Ctrl+F: This keyboard shortcut opens the Find option in any program.

Ctrl+S: If you are working on a software and want to quickly save your progress, this shortcut will come in handy.

Ctrl+Home and Ctrl+End: Useful for quickly going to the top and bottom of a page.

Ctrl+P: Useful for printing the current page.

Space Bar: While viewing a web page in a browser, pressing space bar moves the page down.

Alt+Tab: Useful for quickly cycling between running applications. Press along with Shift to cycle backwards.

Ctrl+Tab: Cycle between tabs in your browser.

Ctrl+F5: Clears the cache and refreshes the current tab.

Shift+Right click: Open alternate right click options wherever applicable. Example: Applicable on Task bar pinned items.

Alt+Double click: Open the file's properties. Alt+Enter can also be used for this.

Source