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GrapheneOS protections against data extraction from locked devices

https://discuss.grapheneos.org/d/40700-grapheneos-protections-against-data-extraction-from-locked-devices
29•Cider9986•2h ago

Comments

robotswantdata•28m ago
Relevant xkcd https://xkcd.com/538/
bigyabai•26m ago
Relevant news story: https://www.androidauthority.com/grapheneos-duress-pin-us-pr...

  According to The Guardian, the US Department of Justice is prosecuting Atlanta resident Samuel Tunick after he allegedly gave a GrapheneOS duress PIN while border agents were trying to search his Google Pixel phone.
It sounds like he did give them the password, but it was the password to wiping his phone and not unlocking it. I'm surprised they didn't back up the device first.
imkac•11m ago
Backup is useless without security chip.
prmoustache•5m ago
From what I understand he was not formally arrested at the time, just interrogated at the border. I am not familiar with US laws but from what I understand the device was not (yet?) considered evidence in an investigation.
rzk•22m ago
I think this has been posted in response to this news story [1] to clarify that GrapheneOS has strong protection against data being extracted even without a duress PIN/password.

On a related note, a recent article [2] also describes how GrapheneOS helped a journalist protect his work and his confidential sources citing the 18-hour auto-reboot feature that returns the device to Before First Unlock (BFU) mode, where keys cannot be extracted.

[1] A US man is being prosecuted after allegedly using a GrapheneOS duress PIN to wipe his Pixel during a border search – https://www.theguardian.com/us-news/2026/jul/23/cop-city-pro...

[2] A Journalist had his mobile phone seized. Did using GrapheneOS protect his data? – https://www.computerweekly.com/feature/Journalist-Richard-Me...

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GrapheneOS protections against data extraction from locked devices

https://discuss.grapheneos.org/d/40700-grapheneos-protections-against-data-extraction-from-locked...
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