this post was submitted on 02 Dec 2023
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Researchers in the UK claim to have translated the sound of laptop keystrokes into their corresponding letters with 95 percent accuracy in some cases.

That 95 percent figure was achieved with nothing but a nearby iPhone. Remote methods are just as dangerous: over Zoom, the accuracy of recorded keystrokes only dropped to 93 percent, while Skype calls were still 91.7 percent accurate.

In other words, this is a side channel attack with considerable accuracy, minimal technical requirements, and a ubiquitous data exfiltration point: Microphones, which are everywhere from our laptops, to our wrists, to the very rooms we work in.

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[–] Waldowal@lemmy.world 100 points 9 months ago (2 children)

New policy from the corporate office: If you are working in a public place, like a coffee shop, please scream while typing your login password.

[–] sanimalp@lemmy.world 45 points 9 months ago

I screamed my password and now I got hacked. Thanks for nothing!

[–] tourist@lemmy.world 10 points 9 months ago

use the onscreen keyboard

much more secure

why won't my bank stop calling me

[–] Cronch@lemmy.world 87 points 9 months ago (2 children)

Quite scary considering the accuracy and how many open mics everyone is surrounded by without even realizing it. Not to mention if any content creator types their password while live streaming or recording they could get their accounts stolen.

[–] vareriu@lemmy.world 46 points 9 months ago (5 children)

One more reason to switch to a password manager, even though they could still find out the master password…

[–] qwertyqwertyqwerty@lemmy.one 29 points 9 months ago (1 children)

Probably still have some safety if you're using two-factor, or have a master key in addition to a password (e.g. 1Password).

[–] mosiacmango@lemm.ee 13 points 9 months ago* (last edited 9 months ago) (1 children)

Or use a local password safe like keepass.

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[–] mjhelto@lemm.ee 8 points 9 months ago (2 children)

Only if you have to type it in to unlock your vault. Now, bear with me.

Bitwarden (maybe others) lets you set a PIN to unlock your vault. Normally, you would think this is a less secure setup, easier to crack with the method outlined in this article. Except with Bitwarden you have to set up the pin in every browser extension and every app install.

Meaning, unless they have access to your device, the PIN to unlock one instance of Bitwarden could be different from the PIN for another. They also don't have to be strictly 4-digit PINs, either. I highly recommend password managers, but for my money, Bitwarden has all my love.

Disclaimer: I am on no way affiliated with Bitwarden. But I could be if they paid me!

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[–] azertyfun@sh.itjust.works 11 points 9 months ago* (last edited 9 months ago)

This has been a known attack vector for years, and I wonder how no livestreamer has been (publicly) attacked in this way.

I guess in large part this can be attributed to 2FA, passwords just aren't worth much by themselves anymore (well I guess if someone is quick enough they can snipe the OTP as well, but streamers are rarely entering their 2FA while streaming since they're on a trusted device).

In fact the biggest attack vector I'd worry about is the infamous SMS 2FA, which is actually 1FA for password resets, which is actually 0FA "yes dear phone operator I am indeed Mister Beast please move my phone number to this new SIM".

[–] ultra@feddit.ro 73 points 9 months ago* (last edited 9 months ago) (1 children)
[–] paraphrand@lemmy.world 57 points 9 months ago (4 children)

Neat, so when my friends are taking about satisfyingly clackety keyboards I can inform them it’s a security hazard.

[–] AmberPrince@kbin.social 36 points 9 months ago

I'll accept the risk. I need the clicky

[–] ryannathans@aussie.zone 12 points 9 months ago (2 children)

Good luck, I have a non standard key layout

[–] Llewellyn@lemm.ee 10 points 9 months ago (7 children)

It's still vulnerable to dictionary attacks

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[–] lolcatnip@reddthat.com 37 points 9 months ago (2 children)

This is why I always make sure there are no boffins around before I start typing.

[–] killeronthecorner@lemmy.world 13 points 9 months ago* (last edited 9 months ago)

If there are boffins around, I start typing out the GDPR guidelines in full

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[–] laurelraven@lemmy.blahaj.zone 36 points 9 months ago (3 children)

Not to be a jerk, but is this actually new? I've heard of this being done at least ten years ago...

On another note, one way to beat this (to a degree) would be to use an alternate keyboard like Dvorak (though you could probably code it to be able to detect that based on what's being typed)

[–] barsoap@lemm.ee 20 points 9 months ago (5 children)

I think it's largely been a state actor thing. Directional microphone to record your window from across the street, spend significant tax money on crunching numbers on a supercomputer to get at your password kind of thing, I think they already could do it in the 90s. Real-time 95% accuracy on a non-specialised device is a quite different ballpark: Now every skiddie can do it.

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[–] misophist@lemmy.world 17 points 9 months ago (2 children)

Coding for alternate key mappings is almost as trivial as detecting other languages.

[–] laurelraven@lemmy.blahaj.zone 7 points 9 months ago

Yeah, that's what I figured

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[–] frezik@midwest.social 13 points 9 months ago (2 children)

There has been previous work on this, yes. It required a dictionary of suggested words. That would make it useful for snooping most typing, but not for randomly generated passwords. This new technique doesn't seem to have that limitation.

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[–] kent_eh@lemmy.ca 30 points 9 months ago

I guess my typos are now a security feature!

[–] mski@lemmy.ca 24 points 9 months ago (1 children)

I'd be curious how well this approach translates to multi-lingual keyboard layouts. For english users, perhaps theres another benefit to non-QWERTY layouts (e.g. Colemak or Dvorak) after all? ... and two factor authentication should remain helpful I presume. Especially physical key methods with no audible characters typed (e.g. Yubikey, Titan, etc.)

[–] jrbaconcheese@yall.theatl.social 28 points 9 months ago

I was thinking the same, but it would be trivial for software to realize that “fnj xlg” maps to “the dog” with Colemak or Dvorak.

[–] stoy@lemmy.zip 23 points 9 months ago (3 children)

I wonder if you need to train it on a specific keyboard before it will work it.

[–] Lemminary@lemmy.world 12 points 9 months ago (1 children)
[–] stoy@lemmy.zip 11 points 9 months ago (1 children)

That would limit the practicallity quite a lot, as deskmats and typing style would change the sound of even a common keyboard.

I also notice that I slightly change my typing style between typing normally and entering my password.

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[–] netchami@sh.itjust.works 16 points 9 months ago (1 children)

Some laptops like the Framework laptop have fingerprint sensors

Physical Security keys like NitroKeys or YubiKeys are another option

[–] Bipta@kbin.social 9 points 9 months ago (1 children)

I don't see the relevance.

[–] netchami@sh.itjust.works 16 points 9 months ago (3 children)

You can use fingerprint or U2F to unlock your password manager and copy the password. That way you don't have to type it in.

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[–] FrankTheHealer@lemmy.world 15 points 9 months ago (8 children)

Can we normalise good but quiet keyboards. Like, I like the tactile feel of using a mechanical, but I hate the sound. Quieter mechanical keyboards aren't a thing but they should be. Now as a security measure if nothing else.

Also Dvorak keyboards I guess

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[–] BearOfaTime@lemm.ee 13 points 9 months ago* (last edited 9 months ago) (1 children)

I never learned to touch-type, so my typing style is very different from most people though I can type fast enough for work.

My typing style only uses 3 fingers, and both hands type keys in the middle of the keyboard.

I wonder if this has any effect on accuracy?

Edit: Article states touch-typing can reduce accuracy. Wonder if that's because they type more softly than us tech gorillas who tend to bash on the keys?

[–] overlordror@lemmy.world 9 points 9 months ago (3 children)

I'm a touch typist who can reach 160wpm when I'm really flowing, I would guess the speed makes accuracy harder to distinguish individual keys than you pressing keys with three fingers.

[–] Dave@lemmy.nz 9 points 9 months ago (3 children)

I type an awful lot slower than you, and still it's faster than I can think. How do you think of what to type fast enough to type at 160wpm?

[–] flipht@kbin.social 9 points 9 months ago

Not the original person you responded to, but I type 120ish wpm. The trick is to try to tap into the same part of your brain that verbalizes words when you talk, rather than the part that composes stuff when you write.

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[–] Render@sh.itjust.works 12 points 9 months ago

I wonder if different switches, keycap profiles, keyboard material ect affect the accuracy?

[–] elias_griffin@lemmy.world 8 points 9 months ago* (last edited 9 months ago)

Is it ignorance, indemnity, or conspiracy that this News Media Corporation didn't give the primary mitigation?

A white noise generator.

[–] fruitycoder@sh.itjust.works 8 points 9 months ago

Might have to spend some time getting Easy Effects/Noise Torch set up on my systems again just to reduce the vectors again.

There is a good comment on this post on physical mitigation that seems helpful as well: https://www.reddit.com/r/Fedora/comments/uerp9z/comment/i6p0jqa/?utm_source=share&utm_medium=mweb3x&utm_name=mweb3xcss&utm_term=1&utm_content=share_button

[–] bionicjoey@lemmy.ca 8 points 9 months ago (6 children)

Isn't boffin a derogatory term like "nerd"?

What a dogshit headline.

[–] IllNess@infosec.pub 8 points 9 months ago

Article also uses the term "eggheads".

To go from keystroke sounds to actual letters, the eggheads recorded a person typing on a 16-inch 2021 MacBook Pro using a phone placed 17cm away and processed the sounds to get signatures of the keystrokes.

[–] Silic0n_Alph4@lemmy.world 6 points 9 months ago

It’s The Register - think the Financial Times for IT but in the style of The Sun/any other British tabloid. They do it for the lulz, if you will - don’t get too hung up on the headlines as the content is top quality.

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