Sandworm Group Shifts to Espionage Attacks, Hacktivist Personas

Recent activity by the well-known Sandworm group - which researchers with Mandiant have started calling APT44 - relies on a mix of espionage efforts and hacktivist personas.

UnitedHealth Took $872M Hit From Change Cyberattack

UnitedHealth Group reports that the Change Healthcare ransomware attack has had an $872 million financial hit on its business, so far.

Critical Crypto Bug Fixed in PuTTY

Many versions of the PuTTY client have a weakness that can generate biased ECDSA nonces and enable an attacker to eventually recover private encryption keys.

CISA Warns of Sisense Breach

CISA is warning of a customer data breach at Sisense, a provider of business data analytics platforms, but the details of the incident are scarce still.

Palo Alto Networks Discloses Critical PAN-OS Zero Day

The flaw is being exploited in the wild, and no patches will be available until Sunday.