this post was submitted on 18 May 2024
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Privacy

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I didn't know my city was cool enough to put signal flyers.

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[–] Baguette@lemm.ee 145 points 5 months ago (15 children)

Cool but I wouldnt exactly trust a random qr code

[–] my_hat_stinks@programming.dev 89 points 5 months ago (11 children)

QR codes essentially just encode text, as long as you're using a sensible QR code reader and check any URLs before opening them there's minimal risk to scanning a QR code.

[–] TaviRider@reddthat.com 71 points 5 months ago (9 children)
[–] hashferret@lemmy.world 30 points 5 months ago (2 children)

Respectfully I think this is a minimal attack vector in this case due to the limited character set of urls. But thanks for the callout, I didn't know there was a name for this sort of attack.

[–] Lichtblitz@discuss.tchncs.de 22 points 5 months ago* (last edited 5 months ago) (1 children)

Modern browsers happily show you the actual characters, while sending their encoded entities to the server. So, from a user perspective there is no ASCII limitation. Case in point: söhne.at (just some random website, I have no idea what they are or if they are legitimate)

[–] gila@lemm.ee 6 points 5 months ago (1 children)

They'd still resolve via DNS to an address in ASCII though, right? Wouldn't that only be an issue if ICANN didn't have a monopoly on DNS registration? i.e what we already depend on for a semblance of convenience without totally compromising opsec

[–] qaz@lemmy.world 9 points 5 months ago* (last edited 5 months ago)

It utilizes punycode under the hood. The actual DNS entries still use ASCII.

[–] qaz@lemmy.world 13 points 5 months ago

Punycode enables you to encode any Unicode character as ASCII. Almost all browsers support this.

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