Hackers Actively Attacking Cisco and Palo Alto Networks VPN Gateways to Gain Login Access
Threat actors launched a coordinated brute-force campaign against enterprise VPN gateways, hammering Palo Alto Networks GlobalProtect portals and Cisco SSL VPN endpoints with millions of automated login attempts in mid-December 2025. GreyNoise intelligence revealed the attacks stemmed from centralized infrastructure hosted by Germany’s 3xK GmbH, using scripted credential stuffing rather than zero-day exploits. The operation […]
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