Mmastodon TechnologyCybersecurity first seen 2 d ago, last 2 d ago, peak #4

Why a six-digit passcode can withstand brute force

Original: Your phone's passcode is six digits. A laptop can try all of them in under a second. It holds because a separate chip (S

Security commentators are explaining why a six-digit phone passcode, which a laptop could exhaust in under a second, still protects real devices. The answer lies in dedicated secure hardware: Apple's Secure Enclave, Google's Titan M2 and Samsung's Knox Vault hold a key that never leaves the chip, so every guess is checked there and throttled after wrong attempts. Budget phones without such chips are flagged as more vulnerable to offline attacks.

Why now: A viral explainer on how secure enclave chips slow brute-force passcode attacks has prompted discussion of hardware-backed phone security

Apple Secure EnclaveGoogle Titan M2Samsung Knox VaultiPhoneAndroid

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Evidence

• Your phone's passcode is six digits. A laptop can try all of them in under a second. It holds because a separate chip (Secure Enclave, Titan M2, Knox Vault) keeps a key that never leaves it, so every guess runs through the chip, slower after each wrong try. Budget phones often… · vpleshkov · 2

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