So.... if you come to download a program you didn't wanna download and execute it and you come to realize your steam csgo inventory isn't safe or something like that and you have access to your steam account there is 1 thing you can do :

1) TRADE OFFER YOUR ITEMS TO A SECONDARY ACCOUNT AND ACCEPT IT AS SOON AS POSSIBLE...

OR

2) DISABLE AND ENABLE AGAIN STEAMGUARD SO THAT YOU GET 15 DAYS TRADE LOCK + MARKET RESTRICTION ( so that the scammer won't get to sell your items for 15 days :D )

1) TRADING with untrusted people ( always check their steamrep or ♥♥♥♥♥♥♥♥♥♥ page,don't trade with them because they have tons of +rep on their steam profile because that's useless rep ). Also if they wanna use a middleman it's 99.9% a scam , so don't do it , they basically tell you to trade the item they want to your friend, then a friend of the scammer changes name and asks for your knife,gg. IF YOU WANNA SELL YOUR SKINS DO IT ON OPSKINS.COM , IT'S SAFER.
1a) Also if somebody offers paypal and has no rep or low rep on trading they might probably scam you ... how? IF YOU GO FIRST WITH YOUR ITEM THEY DON'T GIVE YOU THE MONEY , IF THEY SEND THE MONEY FIRST THEN YOU RECEIVE THE MONEY,GIVE THEM THE ITEM AND THEN SOME DAYS LATER THEY MIGHT ASK FOR A REFUND.... AND PAYPAL ALWAYS GIVES REFUNDS NO MATTER WHAT.

2) FAKE UPDATE REQUEST FROM TEAMSPEAK: If you need to update teamspeak an update request will be generated WHEN YOU OPEN IT, NOT WHEN YOU JOIN A SERVER. IF YOU GET A REQUEST FROM THE SERVER IT'S A SCAM.

3) THE FAKE SCREENSHOT INVENTORY OFFER : If somebody adds you and messages you by saying " hey i have an item in my inventory it's very cool check it out : *link* " DO NOT CLICK ON THE LINK, THEY WILL STEAL YOUR ACCOUNT AND SELL ALL YOUR ITEMS. Remember that if you wanna checkout people inventory you can do that by visiting their steam profiles and clicking on " inventory " ... it's non sense to use a website to show your item :)


4) JOINING A CSGO SERVER BY AN IP : Yep... even if you don't download anything or stuff like that you can still get scammed.... read more : https://www.reddit.com/r/GlobalOffensive/comments/3mgiyo/inventory_lost_to_an_ip_no_downloads_no_links/

5) STEAM WALLET CODES IN TRADES: I have done tons of trades in the past... and well,i never got offered a steam wallet code .... if you do get offered a steam wallet code for example + an awp safari mesh ( LOOKS TOTAL BLACK SO IT'S RARE *not really* ) for your knife,it's most probably a scam and you should NOT ACCEPT.

6) Sometimes it can happen that somebody gives you a trade offer that looks good... and in the middle of bad 4 cents items you have they put a skin worth a lot or a knife so that you are distracted by all your bad skins and trade him the knife OR expensive skin for something worth a lot less.... watch out !

7) You add the guy,talk to him,you go to trade via steam and he changes on purpose one of his items with another one looking the same but of a different quality. WATCH OUT FOR THIS ONE IT'S REALLY COMMON AND IF YOU ACCEPT THE BLAME WILL BE ON YOU !