This Week’s Top Five Stories in Cyber
OpenAI has launched the GPT-5.6 family of models, promising frontier performance while burning through fewer tokens.
With this announcement, the frontier AI company is also clamping down on access by making hardware-backed passkeys mandatory for individual members of its Trusted Access for Cyber (TAC) programme.
From 1 September 2026, individual TAC members must enable Advanced Account Security using a hardware-backed passkey to retain access to OpenAI’s most cyber-capable frontier models. Users who fail to meet the requirement will revert to default access.
“By requiring hardware-backed passkeys rather than sync passkeys or software-based alternatives, OpenAI is validating that our product is the best defence for account takeover,” says Jerrod Chong, CEO of Yubico.
