Wednesday, December 13, 2023

Analyze suspicious files, domains, IPs, and URLs to detect malware and other breaches

I've shared various security analysis tools before, but there's one that stands out as my absolute favorite: VirusTotal.

VirusTotal is an exceptional tool, especially when it comes to scrutinizing suspicious emails or web domains. This tool has become a staple in my security toolkit, and I rely on it extensively before deciding to block an email or when someone requests me to verify an email address.

If you prioritize a proactive approach to cybersecurity, VirusTotal should undoubtedly be in your arsenal.


https://www.virustotal.com





Tuesday, December 12, 2023

ChatGPT on your computer for free


Experience ChatGPT ( AI chat) on your computer for free - the simplest way to deploy Mistral 8x7b Small.

Begin by downloading the model itself. Don't be overwhelmed by the variety; we only need one. Opt for a larger model if your computer boasts superior cooling capabilities, including ample RAM and a robust video card. Here's a handy table of approximate requirements.






Next, install the KoboldCPP interface from GitHub. If you're equipped with an NVIDIA graphics card, opt for koboldcpp_cuda.exe; otherwise, choose koboldcpp.exe.

Launch the executable file, navigate to the "Models" section in the opened window, click "Browse" at the top, and locate your chosen model. Get ready for an effortless ChatGPT experience!

https://mistral.ai - open models for developer community


Tuesday, December 5, 2023

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.

Free Python library GPT4free



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)

Sunday, November 26, 2023

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 )

Monday, November 20, 2023

A Service-Centric Approach to Resolving Connectivity Hurdles / "Your Remote Desktop Services session has ended"




When the company owner contacted me, distressed over an inability to connect remotely to the server and confronted by the cryptic message, "Your Remote Desktop Services session has ended, possibly for one of the following reasons: The administrator has ended the session. An error occurred while establishing the connection. A network problem occurred. The solutions we have presented below can help you resolve the issue" a puzzle beckoned to be unraveled.

 The error message itself presented a spectrum of potential culprits, from administrative actions to network glitches. Familiar troubleshooting suggestions, ranging from disabling the WDDM driver to tinkering with network properties, littered the digital landscape. Tempting as these solutions were, a prudent pause proved invaluable.

Rather than hastily diving into the trove of suggested fixes, I opted to test the waters firsthand. Attempting to log in from my own computer unveiled a disheartening truth: the issue persisted. This revelation was crucial; it safeguarded against a blind pursuit of generic solutions that might have been mismatched to the problem at hand. The predicament was not exclusive to the owner's system but was a systemic hiccup affecting multiple users.

As time elapsed, the chorus of users reporting the same connectivity conundrum grew. Despite a diligent quest for assistance on the vast expanse of the internet, a satisfactory solution remained elusive. It was only when I delved into the system's underpinnings that the needle in the haystack emerged: services.

The heart of the matter, it turned out, was nestled in the intricate web of services that underpin Remote Desktop Protocol (RDP) functionality. A hiccup or malfunction in these crucial background services proved to be the elusive foe causing our remote connection woes.

The takeaway from this saga is clear: when wrestling with RDP connectivity issues, don't overlook the often-overlooked – services. These silent workers in the background wield considerable influence over the seamless functioning of remote connections. Verifying the status of services integral to RDP, such as "Remote Desktop Services" and "Remote Desktop Configuration," is a prudent first step.

In sharing this experience, I hope to spare others the labyrinthine journey I undertook. So, if the enigmatic "Your Remote Desktop Services session has ended" message casts its shadow over your connectivity aspirations, heed the call to inspect your services. It might just be the beacon guiding you out of the connectivity maze and towards a smoother remote desktop experience for all.

 

When dealing with Remote Desktop Protocol (RDP) issues, it's essential to ensure that the relevant services are functioning properly. Here are some critical RDP-related services that you should check:

  1. Remote Desktop Services (RDS):

    • This service is fundamental for RDP functionality. Ensure that both the "Remote Desktop Services" and "Remote Desktop Services UserMode Port Redirector" services are running.
  2. Remote Desktop Configuration:

    • The "Remote Desktop Configuration" service is responsible for configuring various aspects of the Remote Desktop Services. Confirm that this service is set to "Automatic" and is currently running.
  3. Remote Desktop Services UserMode Port Redirector:

    • This service, often abbreviated as UmRdpService, allows a user to control a remote desktop session. Verify that it's set to start automatically and is running.
  4. Remote Desktop Services UserMode Port Redirector Helper:

    • This service supports the Remote Desktop Services UserMode Port Redirector. Ensure that it's set to start automatically and is running.
  5. Remote Procedure Call (RPC):

    • RDP relies on the RPC service. Confirm that the "Remote Procedure Call (RPC)" service is running, as it plays a crucial role in facilitating communication between applications on different computers.

To check and manage these services:

  • Press Windows + R to open the Run dialog, type services.msc, and press Enter.
  • Look for the services mentioned above and ensure their status is set to "Running" and their startup type is configured as "Automatic."

By confirming the status and configuration of these services, you address a foundational aspect of RDP functionality. If any of these services are not running, attempt to start them manually. If issues persist, further investigation or consultation with IT support may be necessary to pinpoint and resolve the root cause of the RDP problem.

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