Removing authorized computers from steam mobile?

[raine]

An account of a friend was hacked but he still has access to it. He is now scared to open his pc while it is connected to the internet because we have suspicions that the hacker was silencing him while he was in discord telling us to report the hacker's account. Is it possible for him to remove other authorized devices through the mobile steam app?

[Karien]

You can, but it's a tad long winded. Market>click on wallet balance>look for manage Steam Guard and tap that then scroll down to find deauthorise all other devices.

[StickyPawz]

Your friend was *phished* not *hacked* ... Have him follow ALL these steps:

Originally posted by J4MESOX4D:

The account is hijacked - your friend gave away his credentials to a phishing site or clicked on a malicious link. They must to the following steps in order and without fail:

DO NOT TRADE

Scan for malware. https://www.malwarebytes.com/

Deauthorize all devices https://store.steampowered.com/twofactor/manage

Change your password on a secure device.

Generate new back up codes. https://store.steampowered.com/twofactor/manage

Revoke the api key https://steamcommunity.com/dev/apikey

The profile description, picture and name can be edited back too.