Cryptographer Matthew Green flags risks in Apple's opaque photo provenance system
matthew_d_green · x · 2026-09-16
Security researcher Matthew Green criticizes Apple's newly deployed photo provenance/privacy features: Apple is vague about whether only Apple can trace photos to a hacked camera, not the public. He likes the privacy direction but argues opacity makes revocation fragile — if a fake image is signed, you need to know which camera to revoke, and unverifiable origins create their own risks.
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