You account IS compromised.

Secure it and move on. I'm on a phone so I can't really do much more but somebody will surely post the steps to secure.

change your password Steam will not help you

Hijacked. Malware or phishing.

Follow steps 1-6 to secure your account:

1. Scan for malware https://www.malwarebytes.com/
2. Check that the email and phone number on the Steam account are still yours.
3. Deauthorize all other devices https://store.steampowered.com/twofactor/manage
4. Change passwords from a trusted/clean device.
5. Generate new backup codes for your Mobile App https://store.steampowered.com/twofactor/manage
6. Revoke the API key https://gtm.steamproxy.vip/dev/apikey (there should be nothing in the APIKEY)

Regarding items:
https://help.steampowered.com/faqs/view/3B6E-B322-2400-8D24

Originally posted by Aluvard:

Hijacked. Malware or phishing.

Follow steps 1-6 to secure your account:

1. Scan for malware https://www.malwarebytes.com/
2. Check that the email and phone number on the Steam account are still yours.
3. Deauthorize all other devices https://store.steampowered.com/twofactor/manage
4. Change passwords from a trusted/clean device.
5. Generate new backup codes for your Mobile App https://store.steampowered.com/twofactor/manage
6. Revoke the API key https://gtm.steamproxy.vip/dev/apikey (there should be nothing in the APIKEY)

Regarding items:
https://help.steampowered.com/faqs/view/3B6E-B322-2400-8D24

Thank you for doing what I couldn't.

Originally posted by Thermal Lance:

Originally posted by Aluvard:

Hijacked. Malware or phishing.

Follow steps 1-6 to secure your account:

1. Scan for malware https://www.malwarebytes.com/
2. Check that the email and phone number on the Steam account are still yours.
3. Deauthorize all other devices https://store.steampowered.com/twofactor/manage
4. Change passwords from a trusted/clean device.
5. Generate new backup codes for your Mobile App https://store.steampowered.com/twofactor/manage
6. Revoke the API key https://gtm.steamproxy.vip/dev/apikey (there should be nothing in the APIKEY)

Regarding items:
https://help.steampowered.com/faqs/view/3B6E-B322-2400-8D24

Thank you for doing what I couldn't.

np.

Thank you everyone. I got it back. Thank you for all your comments. I need to be more vigilant.

I have another suggestion: In the Steam mobile app: Tap the shield in the bottom center. Once the scan thing is up that looks like you're going to scan a QR code tap the cog-wheel (very small) in the bottom right corner then tap on Authorized Devices. Look through the list and if you see anything you don't recognize then tap on it and revoke access. Or to be sure you can just revoke access to everything and re-login again. This will let you see if any other person is still logged into your steam account and you can kick em out through this.

After you change your password they could still be logged in and then change your password to something else on you again and they could even revoke your access to it so get on it and check it asap.

steam game that was stealing 100% of wallet founds and somehow bypassing steam guard all together.
the game would make people use 100% of wallet founds on market stuff. let me find link
https://gtm.steamproxy.vip/groups/Sentinels_of_the_Store/announcements/detail/534361794856092966