NEW: Hackers have compromised tens of thousands of Fortinet firewalls used by major companies around the world, according to two cybersecurity firms.
The campaign, which is ongoing, relies on brute-forcing the firewalls with known passwords. Victims allegedly include telcos and big tech companies.
An alleged Russian-speaking group of cybercriminals are reportedly compromising and targeting several major companies that use Fortinet Firewalls and VPNs through previously known passwords.
