LummaStealer Is Getting a Second Life Alongside CastleLoader

Bitdefender Labs 11 February 2026, 16:00 EET Security

Bitdefender researchers have discovered a surge in LummaStealer activity, showing how one of the world's most prolific information-stealing malware operations managed to survive despite being almost brought down by law enforcement less than a year ago. LummaStealer is a highly scalable information-stealing threat with a long history, having operated under a malware-as-a-service model since it…

Read the full story on Bitdefender Labs https://www.bitdefender.com/en-us/blog/labs/lummastealer-second-life-castleloader

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