The Era of Item Duplication
- A hacker steals a $1,000 Karambit | Fade.
- The hacker immediately sells the Karambit to an innocent third-party trader for cash, or trades it through a network of bots.
- The original owner contacts Steam Support.
- Steam Support cannot simply take the knife away from the innocent third-party trader who paid for it in good faith.
- Therefore, Steam Support would create a duplicate of the Karambit Fade and give it to the victim.
The Duplication Exploit
The Introduction of Steam Guard and the Policy Shift
The Brutal Reality of the Current System
- You approved the trade on your phone. (Even if you were tricked by an API scam or an item switch, you still clicked 'Accept' on the final confirmation screen).
- You allowed your phone to be compromised. (e.g., you scanned a malicious QR code, granting a hacker total access).



