Beyond the Trust Boundary: A Critical Reassessment of the FIDO2 Threat Model

FIDO2/WebAuthn has been widely deployed as a phishing-resistant authentication scheme. Because FIDO2 relies on public-key cryptography and hardware-backed authenticators, its security is often assumed to be guaranteed by design, provided that the cryptographic implementation is correct. In this...

Samsung Encryption Flaw

Researchers have found a major encryption flaw in 100 million Samsung Galaxy phones. From the abstract: In this work, we expose the cryptographic design and implementation of Androids Hardware-Backed Keystore in Samsungs Galaxy S8, S9, S10, S20, and S21 flagship devices. We reversed-engineered an...