I gave my card number to a suspicious website. What now?

Reviewed answer

Contact your card issuer now, even if no suspicious charge has appeared.

Lock the card in its official app if available, then call the number on the card or your statement.
Explain what was exposed. Ask about replacing the card and disputing any fraudulent charges.
Turn on transaction alerts and review statements for small test charges as well as larger purchases.

Get help if

Any unfamiliar charge needs prompt reporting. In the US, debit-card protections can depend on how quickly you report.