Miscreants 'mass exploited' Fortinet firewalls, 'highly probable' zero-day used

Ransomware 'not off the table,' Arctic Wolf threat hunter tells El Reg Miscreants running a "mass exploitation campaign" against Fortinet firewalls, which peaked in December, may be using an unpatched zero-day vulnerability to compromise the equipment, according to security researchers who say they've observed the intrusions....