Cybersecurity

5672 readers

126 users here now

c/cybersecurity is a community centered on the cybersecurity and information security profession. You can come here to discuss news, post something interesting, or just chat with others.

THE RULES

Instance Rules

Be respectful. Everyone should feel welcome here.
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia.
No Ads / Spamming.
No pornography.

Community Rules

Idk, keep it semi-professional?
Nothing illegal. We're all ethical here.
Rules will be added/redefined as necessary.

If you ask someone to hack your "friends" socials you're just going to get banned so don't do that.

Learn about hacking

Hack the Box

Try Hack Me

Pico Capture the flag

Other security-related communities !databreaches@lemmy.zip !netsec@lemmy.world !cybersecurity@lemmy.capebreton.social !securitynews@infosec.pub !netsec@links.hackliberty.org !cybersecurity@infosec.pub !pulse_of_truth@infosec.pub

Notable mention to !cybersecuritymemes@lemmy.world

founded 1 year ago

MODERATORS

kid@sh.itjust.works

Lanky_Pomegranate530@midwest.social

Godlike Hack Steals Encrypted Keys by Watching LED From 16 Meters Away (futurism.com)

submitted 1 year ago* (last edited 1 year ago) by PhantomPhanatic@lemmy.world to c/cybersecurity@sh.itjust.works

18 comments fedilink hide all child comments

Link to the paper: https://eprint.iacr.org/2023/923

you are viewing a single comment's thread
view the rest of the comments

[–] sudo@lemmy.fmhy.ml 5 points 1 year ago (1 children)

Reminds me of a story from nearly a decade ago where researchers were able to decrypt an RSA key by recording a CPU with a phone.

The attack can extract full 4096-bit RSA decryption keys from laptop computers (of various models), within an hour, using the sound generated by the computer during the decryption of some chosen ciphertexts

[–] PhantomPhanatic@lemmy.world 1 points 1 year ago

I think I recall reading about this one too. There are all kinds of ways processors and devices leak information. If you have the time and access you can correlate a lot of things to specific hardware and software operations.

I remember hearing something about a typewriter bug that is tuned to determine the key pressed by the particular acoustic signature of each key press. These kinds of outside-the-box solutions really interest me.

EMI and crosstalk is another area where information can leak and there are already snooping devices that work using that.