Your passkeys could be vulnerable to attack, and everyone – including you – must act

September 20, 2025

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ZDNET’s key takeaways

A researcher developed an exploit that hijacks passkey authentication.
The exploit depends on a non-trivial combination of pre-existing conditions.
Neither the passkeys nor the protocol was proven to be vulnerable.

At this year’s DEF CON conference in Las Vegas, white hat security researcher Marek Tóth demonstrated how threat actors could use a clickjack attack to…

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