VIC: Hello, I am a customer service representative from your bank. We have recently detected some unusual activity on your account and need you to confirm some information immediately to ensure account security.  
Scam: Oh, really? My account has unusual activity? What should I do?  
VIC: First, please don't worry. We have already taken measures to protect your account. To further verify your identity, could you please provide your account number and the amount of your most recent transfer? That way we can confirm that it is indeed you making the transaction.  
Scam: Okay, my account number is 12345678, and the most recent transfer was 5,000 yuan. Do you need any more information from me?