Security Notes

Security Notes & Practical IT Articles

Practical notes about website security, server problems, OSINT, email configuration, and common technical issues I see in small business environments.

June 1, 2026

The Invisible Security Hole: Why Any Criminal Can Send Email From Your Domain

Most business owners believe that if their email server is secure and their passwords are strong, their email domain is safe.

That is completely false.

There is a fundamental flaw in the way global email works. By default, it operates like traditional paper mail. Anyone can write any name they want on the envelope, drop it in a mailbox, and the postal service will deliver it.

In the digital world, this means a malicious actor can send an email that appears to come exactly from your domain without ever breaking into your system or knowing a single password.

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May 28, 2026

Why Do Small Websites Get Hacked?

Many people understand why large websites get attacked.

Banks, online shops, payment platforms, SaaS companies, crypto exchanges, large media websites - there is an obvious reason. They have traffic, customer data, payments, accounts, infrastructure, money, or reputation worth abusing.

But then there is a more confusing question:

Why would anyone hack a tiny business website?

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May 27, 2026

OSINT: What Your Business Reveals Without Being Hacked

Most people think a security problem starts when someone breaks into a system.

That is not always true.

Sometimes the problem starts much earlier, with information that is already public.

No hacking. No malware. No password cracking. No dramatic movie scene with a black screen and green letters.

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May 26, 2026

Dark AI: How Criminal LLMs Lower the Barrier for Cybercrime

A few years ago, a script kiddie had a problem.

They could download tools. They could copy commands. They could follow tutorials. They could run someone else's code.

But when something broke, they were usually stuck.

They did not understand the error. They did not know how to modify the code. They could not adapt the tool properly. They could not write convincing phishing text. They could not build a realistic scam page. They could not troubleshoot a failed attack chain without help from forums, Telegram groups, or more experienced criminals.

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