this post was submitted on 27 Sep 2024
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Microblog Memes

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[–] [email protected] 174 points 1 month ago (3 children)

Plugging into a random usb port is bad security

[–] [email protected] 85 points 1 month 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.

[–] [email protected] 69 points 1 month ago (1 children)

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

[–] [email protected] 63 points 1 month 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.

[–] [email protected] 17 points 1 month 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.

[–] [email protected] 14 points 1 month ago (1 children)

Ton of voltage. You push voltage and pull current.

[–] [email protected] 7 points 1 month ago

I only push imperial current electron flow style.

[–] [email protected] 0 points 1 month ago

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

[–] [email protected] 30 points 1 month 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.

[–] [email protected] 11 points 1 month 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)

[–] [email protected] 8 points 1 month 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

[–] [email protected] -1 points 1 month ago

Happy Cakeday! 🍰🎂

[–] [email protected] 15 points 1 month ago (1 children)

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

[–] [email protected] 3 points 1 month ago* (last edited 1 month ago)

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

[–] [email protected] 8 points 1 month ago (1 children)

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

[–] [email protected] 2 points 1 month ago

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

[–] [email protected] 8 points 1 month 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.

[–] [email protected] 2 points 1 month ago

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

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

[–] [email protected] 17 points 1 month ago (2 children)

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

[–] [email protected] 15 points 1 month 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.

[–] [email protected] 13 points 1 month ago* (last edited 1 month ago) (1 children)

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

[–] [email protected] 7 points 1 month ago

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

[–] [email protected] 5 points 1 month ago (2 children)

So’s leaving the house.

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

[–] [email protected] 4 points 1 month ago

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