Tag: yubikey
1 article
Passkey Defenses Targeted in Novel Attacks
Researchers at Black Hat USA 2026 revealed a shocking vulnerability in passkey defenses, demonstrating how attackers can bypass FIDO2 cryptography and exploit a flaw in Windows Event Logging Service (CVE-2026-34348) to defeat passkey protections. This security gap was found to allow unauthorized users to access and replay sensitive YubiKey signatures.