Microsoft has confirmed that a staggering three zero-day cyberattacks are underway against Windows users—here’s what you need to know.

Fortinet firewalls running firmware versions 7.0.14-7.0.16 targeted by attackers using zero-day vulnerabilities.

Ransomware 'not off the table,' Arctic Wolf threat hunter tells El Reg Updated 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,

Security researchers say "tens" of Fortinet devices have been compromised so far as part of the weeks-long hacking campaign.

The advisory from the cybersecurity company follows a report from security researchers who observed exploits in the wild in early December as part of a widespread campaign.