Back to today’s briefing

Story perspectives

Massive Botnet Targets Microsoft 365, Bypasses Security Measures

2/27/2025

50 5

Summary

Story summary

A massive botnet of over 130,000 hacked devices is unleashing password-spraying attacks on Microsoft 365 accounts, cleverly sidestepping multi-factor authentication. Tied to Chinese cybercriminals, this operation exploits stolen credentials to target vulnerable organizations in finance, healthcare, and government, raising alarms about the security of critical sectors.

1 of 1

Story summary

A massive botnet of over 130,000 hacked devices is unleashing password-spraying attacks on Microsoft 365 accounts, cleverly sidestepping multi-factor authentication. Tied to Chinese cybercriminals, this operation exploits stolen credentials to target vulnerable organizations in finance, healthcare, and government, raising alarms about the security of critical sectors.