Cybercriminals have compromised tens of thousands of Fortinet firewalls and VPNs used by major companies all over the world, according to two cybersecurity firms.
The widespread hacking campaign, which is ongoing and has been dubbed FortiBleed, appears to not involve abusing any unknown vulnerability in the targeted devices, but rather on a more basic issue: Companies may not be changing passwords to the firewall, nor making sure that the credentials they use for sensitive systems exposed on the internet are not already known by hackers.