Notably, the top 3 ransomware tools they mention are Windows only (Locky, TeslaCrypt, CryptoWall). And that's not just because of platform popularity. There wa

Notably, the top 3 ransomware tools they mention are Windows only (Locky, TeslaCrypt, CryptoWall). And that's not just because of platform popularity. There was recently a case of Mac ransomware (KeRanger) but it was not via a phishing email. It was considerably harder to distribute because Mac users can't simply run unsigned software downloaded from the internet (by default). The attacker got control of an app developer signing certificate and hijacked their software update to deliver the ransomware. It was halted as soon as the the certificate was revoked.