QUIC-LEAK Vulnerability Allows Attackers to Drain Server Memory and Cause DoS

Security researchers at Imperva have disclosed a critical pre-handshake memory exhaustion vulnerability in the widely-used LSQUIC QUIC implementation that enables remote attackers to crash servers through denial-of-service attacks. The flaw, designated CVE-2025-54939 and dubbed “QUIC-LEAK,” bypasses standard QUIC connection-level protections…

New Campaign Uses Active Directory Federation Services to Steal M365 Credentials

Researchers at Push Security have discovered a new phishing campaign that targets Microsoft 365 (M365) systems and uses Active Directory Federation Services (ADFS) to enable credential theft. This attack vector exploits Microsoft’s authentication redirect mechanisms, effectively turning a legitimate service…