Act in this order: freeze money, secure accounts, preserve evidence, then report. Do not send more money to “recover” the first payment.
Call 1930 quickly if money was lost, then file a report on the national cybercrime portal.
Contact your bank/card issuer first, then report fraud through FTC/IC3 channels depending on the incident.
Contact your bank immediately, then report the incident to Action Fraud where appropriate.
Call your bank first, then report to the Canadian Anti-Fraud Centre if relevant.
Contact your bank first, then report scams through Scamwatch or cybercrime reporting channels.
Contact your bank or payment provider first. Then report to your national cybercrime, consumer protection, or police portal.