GreyNoise reports a coordinated wave of login attempts against Palo Alto GlobalProtect portals, later expanding into scans of SonicWall SonicOS API endpoints. More than 7,000 IPs tied to 3xK GmbH infrastructure were involved.
Palo Alto Networks confirmed the activity represents credential-based probing, not a vulnerability exploit.
Defenders are encouraged to enforce MFA, track recurring client fingerprints, and apply dynamic blocking.
Source: https://www.bleepingcomputer.com/news/security/new-wave-of-vpn-login-attempts-targets-palo-alto-globalprotect-portals/
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