Before a large trade
Check the account name carefully, scan the user, compare values from your usual sources and avoid pressure trades. If someone rushes you, changes the deal repeatedly or avoids basic questions, treat that as a risk signal.
Use screenshots properly
Screenshots should show the account, the item, the trade context and the reason it looks suspicious. Cropped screenshots can still help, but they are weaker than clear full-context evidence. Do not edit screenshots to make a report look stronger.
Middlemen and trust
A middleman can reduce risk only if the person is actually verified by the community you trust. Fake middleman accounts and impersonators are common in trading communities. Always verify the account directly inside the server or system where the middleman is trusted.
Clean result does not mean zero risk
If DejaVu says no known duplicate hit was found, it only means the available sources did not return a hit at scan time. New evidence can appear later, database coverage can be incomplete, and some trades are risky for reasons that are not visible to a checker.
When to walk away
Walk away when the trade feels too rushed, the value gap is unrealistic, the user refuses normal verification, the item story changes, or the other side reacts aggressively to basic safety checks.