I believe they "hacked" it by physically editing the SD card. If someone has unfettered access to your email server you're in bad shape. Iirc the payload requir

I believe they "hacked" it by physically editing the SD card. If someone has unfettered access to your email server you're in bad shape. Iirc the payload required navigating to a link and downloading a malicious file...Each time the attacker wanted to run code.