The recent federal raid on the home of Washington Post reporter Hannah Natanson isn’t merely an attack by the Trump administration on the free press. It’s also a warning to anyone with a smartphone.

Included in the search and seizure warrant for the raid on Natanson’s home is a section titled “Biometric Unlock,” which explicitly authorized law enforcement personnel to obtain Natanson’s phone and both hold the device in front of her face and to forcibly use her fingers to unlock it. In other words, a judge gave the FBI permission to attempt to bypass biometrics: the convenient shortcuts that let you unlock your phone by scanning your fingerprint or face.-

It is not clear if Natanson used biometric authentication on her devices, or if the law enforcement personnel attempted to use her face or fingers to unlock her devices. Natanson and the Washington Post did not respond to multiple requests for comment. The FBI declined to comment.

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[–] 112 points 7 months ago* (6 children)

Or at the very least; turn your phone entirely off (shutdown) whenever you expect or encounter police contact.

Biometrics only work when the device is already running. Mobile devices are in their most locked down/secure state when 'at rest', ie shutdown.

In android; there is also a 'lockdown' mode you can quickly activate from the power off screen, that disables Biometrics until next unlock with a pin/pattern, but doesn't fully shutdown so you can still quickly access things like the camera. This has to be explicitly enabled in settings first and will not offer much protection from various lockscreen bypass software available to law enforcement.

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  • [–] 62 points 7 months ago* (last edited 7 months ago) (8 children)

    Also, don't take your phone to protests. ACAB.

    Wear clothing that can't identify you. Hide tattoos and anything that might make you stand out. Get clothes from a free giveaway place, without cameras. Walk a bit differently if you need to.

    Cover your face and cover surveillance cameras, or break them, or hack them (do the latter two only if you know what you're doing).

    Wear a body cam. Get bear and pepper spray. Pigs can fucking get it.

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  • [–] 17 points 7 months ago (4 children)

    I've been debating buying a burner phone for protests, leaving my main phone elsewhere, and only powering on the burner when it's needed. Probably the only way to bring a phone to a protest.

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    [–] 75 points 7 months ago*

    hold the device in front of her face and to forcibly use her fingers to unlock it. In other words, a judge gave the FBI permission to attempt to bypass biometrics

    This isn't bypassing biometrics. This is using biometrics as intended. Bypassing implies this was an unexpected side effect when every security researcher ever has warned that biometrics is intrinsically vulnerable and a terrible password substitute for this exact reason.

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  • [–] 56 points 7 months ago (6 children)

    Use GrapheneOS so you can "unlock" your phone and enter the wipe code instead.

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  • [–] 47 points 7 months ago (14 children)

    Even better, set it to 1234567890 or 00000000 or similar easy to guess pin, and change it to the length of your actual pin, now if someone tries to bruteforce your phone it will instantly wipe and you can make a case that it was the law enforcement who destroyed any "evidence" by their own actions if in comes up In court.

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  • [–] 12 points 7 months ago (2 children)

    Don't they make a copy of the phone before they go about trying to unlock it?

    This kind of security is only going to work against a careless or incompetent atta-- oh. I see...

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  • [–] 10 points 7 months ago* (2 children)

    That requires USB connection to even be possible with a locked phone.

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    [–] 31 points 7 months ago*

    Another thing for an overhauled Constitution. One's body and devices should be considered to be papers and effects.

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  • [–] 29 points 7 months ago (1 child)

    On iPhone say "Hey Siri, who's phone is this?" to disable biometric unlock temporarily.

    On Android press the power and volume up buttons to open the power off screen, then press "lock down".

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  • [–] 16 points 7 months ago* (last edited 7 months ago)

    On the iPhone you can also press both the upper left and right button. It will enable that you can only log in with a password, even if you have Face ID/Touch ID.

    You can also establish that if there are too many false attempts to log in, the phone will delete all data. I could imagine that if you kept most phone data on the phone itself, rather than in the cloud, this can be useful. E.g. insert the password wrongly multiple times.

    And if you're feeling really concerned, you can make a Faraday cage (preventing it from sending data altogether). Wrap a plastic bag around, then aluminium foil tightly without gaps, then plastic.. repeat three times.

    Alternatively, put it in a microwave. Or a stainless trash can with a tight lid, lining the inside with (optional: cardboard first, then..) plastic wrap, maybe more foil. Phone also foiled.

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  • [–] 28 points 7 months ago (10 children)

    Jesus fucking christ.

    I don't use my phone for anything other than directions, phone calls, and texting my wife. Partially because I'm not going to carry around something with tons of shit that can be used against me.

    This is fucking insane.

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    [–] 27 points 7 months ago (2 children)

    The only safe phone is a phone with a strong password thats in a powered down state. Otherwise there are tools to gain full access.

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  • [–] 30 points 7 months ago* (last edited 7 months ago) (8 children)

    The only safe phone is a phone with no data.

    Otherwise there will be tools to gain full access.

    Without forgetting the good old rubber hose attack

    FWIW I think the only way to keep confidential information is hosted in another country, encrypted, with no credentials (or even the name of the server) cached, all on open sources stacks, with the infrastructure provider different from the operating system provider different from the application provider and encryption provider

    Is this convenient? No Is this accessible to the average user? No

    I just think something at certain point went extremely wrong in history. We accepted control in exchange of convenience

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    [–] 25 points 7 months ago (11 children)

    that's precisely why i never stopped using a password to access my phone.

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    [–] 23 points 7 months ago (1 child)

    What if you take your dick and use that on the fingerprint scanner, do you think the cops would make you whip it out

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  • [–] 23 points 7 months ago (1 child)

    I use biometrics to access some of the apps on my phone. But my home screen requires a password to unlock.

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  • [–] 15 points 7 months ago (2 children)

    How is current USA administration performing these clear gestapo level violations of amendments and everyone's just like "okay". ?!

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    [–] 15 points 6 months ago* (2 children)

    Or better yet use GrapheneOS 2FA biometric + PIN + duress PIN + auto reboot:

    • If someone spies on you unlocking your phone, they don't get your encryption password
    • If they figure out your PIN, they can't unlock your phone without you physically being there, and your phone may reboot to the password unlock before they get it to you
    • If they compel you to use biometrics, they can't legally compel you to give them your PIN
    • If they decide to start trying out common PINs and you set your duress PIN to one of them, then it wipes your phone
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    [–] 13 points 7 months ago

    What's interesting is that the DC Circuit doesn't allow authorities to force someone to unlock their device with biometrics. I'm assuming that Natanson's home is not inside the DC Circuit.

    It's a legally unclear area right now whether or not authorities can force you to unlock your device with biometrics. As such, it's better not to use them: https://decentproject.org/should-you-use-biometrics-on-your-phone

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  • [–] 12 points 7 months ago (5 children)

    Why? Apple and Google will just unlock it for them later.

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    [–] 12 points 7 months ago (4 children)

    I don’t know what it is on android, but five quick presses of the primary button on iOS will put the phone into a mode where you must enter your password to unlock it.

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