Botnet Boogeyman: 130,000 Devices Haunt Microsoft 365 with Password-Spray Attacks!
A botnet of over 130,000 compromised devices is targeting Microsoft 365 accounts using Basic Authentication to bypass multi-factor authentication. Like a cyber ninja in plain sight, it sneaks past security with audacity, proving that sometimes the best way to hide is in plain text.

Hot Take:
Who needs Hollywood hackers when you have a botnet of 130,000 devices playing “Guess the Password” on repeat like a broken record? Basic Auth is like the rotary phone of security protocols – nostalgic, but really not what you want to rely on when the neighborhood prankster is trying to sneak into your house through the backdoor. It’s time to hang up that call and switch to something a bit more 21st century!
Key Points:
- A botnet of over 130,000 devices is conducting password-spray attacks on Microsoft 365 accounts.
- Attackers bypass Multi-Factor Authentication by exploiting Basic Authentication.
- Basic Auth allows sending credentials in plaintext, making it a juicy target for hackers.
- Possible links to Chinese threat actors, but no definitive attribution yet.
- Organizations are urged to disable Basic Auth and enable stronger security measures.
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