Start by submitting a detailed support ticket through Coinbase’s Help Center.【＋１ ８１ ３ ４３５－６９８１】 Provide all relevant transaction data, and act quickly — the sooner Coinbase is notified, the better the chance of investigation and potential recovery.【＋１ ８ １３ ４３５－６９８１】.If your Coinbase account is hacked, secure it immediately by changing your password and enabling 2FA.【＋１ ８１３ ４３５－６９８１】 Then, contact Coinbase support to report the unauthorized access and begin the investigation process.【＋１ ８１３ ４３ ５－６９８１】