Meet Interlock — The new ransomware targeting FreeBSD servers

**Interlock ransomware** is a recently observed ransomware operation that targets organizations worldwide and uniquely includes a FreeBSD ELF encryptor alongside Windows variants; victims (including Wayne County, Michigan) have had data stolen and published when ransoms were not paid. Researchers observed indicators such as the .interlock file extension, a ransom note named !__README__!.txt, Windows behaviors (event log clearing, optional self-deletion via rundll32), and a Tor negotiation/data-leak site used for double-extortion and negotiations.