The bank card suddenly received a refund message from the police.

If you receive a short message from the police saying that the bank card is refunded, it may be fraud. In order to protect your personal information and property, I suggest you take the following measures:

1. Don't trust the content of the message: don't click on the link or dial the phone number in the message at will.

2. Verify the refund information: contact your bank to verify whether there is a refund operation. It can be confirmed by the bank's customer service telephone in official website, or it can be consulted at the bank counter.

3. Beware of phishing websites: avoid logging into online banking or entering other sensitive information through the links provided by SMS. Please manually enter the bank official website directly in the browser.

4. Call the police and report to the bank: If it is confirmed to be fraud, you should immediately call the local public security organ and contact your bank for risk control.

It should be noted that the public security department generally does not refund directly through SMS, but operates through formal channels such as banks. If you don't apply, don't trade, and receive a refund message, it is likely that the liar is engaged in fraud. Be vigilant and take timely measures to protect your property.