Some time ago, I took on a pretty typical case. A crypto friend used a good brother’s real-name account on a major exchange to make regular investments, accumulating over 200 Ethereum, with a market value of more than 8 million. The problem was, suddenly the account couldn’t be logged into—yes, my good brother had changed the email and phone number linked to the exchange.

Basically, this case was about testing human nature with over 8 million yuan, and human nature didn’t pass the test. Even worse, the use of the account was entirely based on face-to-face verbal communication, with no written evidence left.

How did we handle it after taking over?

**Step 1: Quickly freeze the account.** Virtual assets are most vulnerable to being transferred out—if the coins can’t be moved, there’s still room for maneuver.

**Step 2: Secure evidence first.** For cases like this, if there’s no evidence, you need to learn how to create evidence. First, stabilize the factual framework; whether pursuing criminal or civil litigation later, you’ll have the confidence to proceed.

**Step 3: Collect exchange data.** This is the backbone of the entire case—KYC verification information, transaction records, deposit and withdrawal details. These data can indirectly prove who the true user and operator of the account are, and also help lock down the involved amount and asset value.

Honestly, don’t expect the police to file a case just because you say “there’s 8 million in the account.” That’s just adding to the frustration. In virtual currency cases, the chain of evidence is crucial—solving the police’s doubts means half the case is won.