this post was submitted on 23 Jun 2025
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The Guardian and Cambridge University's Department of Computer Science unveil new secure technology to protect sources (www.theguardian.com)
submitted 1 day ago* (last edited 1 day ago) by Davriellelouna@lemmy.world to c/technology@lemmy.world
51 comments fedilink hide all child comments
 

Academic paper: https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-999.pdf

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[–] papertowels@mander.xyz 1 points 14 hours ago (1 children)

Would you? Are the headers encrypted?

[–] Ulrich@feddit.org 1 points 14 hours ago (1 children)

Does it matter? How would you get access to such information?

[–] papertowels@mander.xyz 1 points 13 hours ago* (last edited 12 hours ago) (1 children)

If the header isn't encrypted it'd be easy to inspect, and thus easy to determine where it goes, which is why it matters.

Based on your questions, it sounds like you're expecting the network traffic itself to be encrypted, as if there were a VPN. Does signal offer such a feature? My understanding is that the messages themselves are encrypted, but the traffic isn't, but I could be wrong.

[–] Ulrich@feddit.org 0 points 12 hours ago (1 children)

If the header isn't encrypted it'd be easy to inspect

Easy for whom? How are you getting access to the traffic info?

[–] papertowels@mander.xyz 1 points 12 hours ago (1 children)

You're talking about encryption and signal because you're worried about folks whose network you're connected to being able to invade your privacy, right?

I'd say it's a pretty reasonable suggestion to say we start with those guys. If you don't worry about those guys, who do have access to traffic info, then why bother with encryption?

[–] Ulrich@feddit.org 0 points 12 hours ago (1 children)

You're talking about encryption and signal because you're worried about folks whose network you're connected to being able to invade your privacy, right?

LOL no? I'd never blow the whistle on my employer from my desk. Even if I did, I would connect to a different network.

I recognize other people are not as conscious as I am of that vulnerability but you asked about me, specifically.

If you don't worry about those guys, who do have access to traffic info, then why bother with encryption?

Any number of other people. Primarily the government.

[–] papertowels@mander.xyz 1 points 12 hours ago* (last edited 12 hours ago)

Any number of other people. Primarily the government.

Right, so if the header isn't encrypted, it'd be trivial for them to see who you're sending to, which is why that's important.

You never answered my question - do you think the network connection itself is encrypted? Or just the content of the messages?