this post was submitted on 27 Sep 2024
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Microblog Memes

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[–] jlh@lemmy.jlh.name 173 points 2 months ago (3 children)

Plugging into a random usb port is bad security

[–] halcyoncmdr@lemmy.world 85 points 2 months ago (6 children)

Not really bad if you use a power-only cable. If the data pins aren't even wired up, can't move anything other than power.

Not sure if that works with USB-C at anything other than legacy 500mA power draw though, probably not since the device can't communicate for what it supports.

[–] aeronmelon@lemmy.world 69 points 2 months ago (1 children)

If your device has good software, it will only allow power unless you authorize a data connection.

[–] turmacar@lemmy.world 63 points 2 months ago (1 children)

* Assuming there is no bug, zero-day, or other vulnerability on the current version of your fully updated device.

Having a power-only cable removes that as a possibility.

[–] mitchty@lemmy.sdf.org 17 points 2 months ago (2 children)

Still gotta worry about stuff that could send a ton of current to fry the ports too. USB condoms can help here too but your own power adapter is best.

[–] frezik@midwest.social 14 points 2 months ago (1 children)

Ton of voltage. You push voltage and pull current.

[–] mitchty@lemmy.sdf.org 7 points 2 months ago

I only push imperial current electron flow style.

[–] lud@lemm.ee 0 points 1 month ago

Nah, I won't worry about such problems until there is a chance of it actually happening.

[–] daniskarma@lemmy.dbzer0.com 30 points 2 months ago (1 children)

Now if only usb cables were labeled like Ethernet cables.

It amazes me how given the complexity of the USB specifications, where everything looks the same but it is not the same, nothing is ever labeled.

[–] seaQueue@lemmy.world 11 points 2 months ago (2 children)

Some things are but the labelling is stupid and tiny. Many laptop ports are labeled but people aren't familiar with the icons (and the icons are often confusingly similar)

[–] xantoxis@lemmy.world 8 points 2 months ago

Well--to bring it back to the security point, you can't trust the icon on the port anyway. You need a well-labeled cable, and, good luck

[–] AngryCommieKender@lemmy.world -1 points 2 months ago

Happy Cakeday! 🍰🎂

[–] shinratdr@lemmy.ca 15 points 2 months ago (1 children)

A power only USB-C cable is a violation of USB spec, has to be USB 2.0 at the least.

[–] amorpheus@lemmy.world 3 points 2 months ago* (last edited 2 months ago)

That's never stopped companies from making something, like A to A USB cables.

[–] fmstrat@lemmy.nowsci.com 8 points 2 months ago (1 children)

Until you find that person who wired a 48v USB plug, just for you.

[–] sploosh@lemmy.world 2 points 1 month ago

USB-PD standards push 50v. Go with wall voltage (110-220v 60/50hz) to be sure.

[–] Eiri@lemmy.ca 8 points 2 months ago

With this arrangement, they probably can't steal your data. But they can absolutely destroy your phone with a string electric shock, if that's the sort of malicious plan they have.

[–] aulin@lemmy.world 2 points 2 months ago

Not really bad if you use a power-only cable.

Or a USB condom. But I never really hear about those anymore.

[–] Bangs42@lemmy.world 17 points 2 months ago (2 children)

There has never been a proven case of juice jacking, anywhere, ever.

[–] myplacedk@lemmy.world 15 points 2 months ago

But I have seen multiple phones get harmed by a really bad charger. Although these chargers were not for public use.

Still, it's not a bad idea to bring a power bank. And then charge that, if you need to.

[–] absentbird@lemm.ee 13 points 2 months ago* (last edited 2 months ago) (1 children)

At least that's what the juice jackers want us to think.

[–] DragonTypeWyvern@midwest.social 7 points 2 months ago

Bangs42 thinks they're slick, but we all know that's what a juice jacker would say.

[–] li10@feddit.uk 5 points 2 months ago (2 children)

So’s leaving the house.

Stay in, bolt the doors, board up the windows, stay safe.

[–] dnick@sh.itjust.works 4 points 2 months ago

Except that isn't even safe, just paranoid. Sometimes accidents happen because you're trying to prevent accidents