Online Threat Alerts (OTA) - Alerting you to scams and frauds.

Citi Fraud Department Numbers and Other Contacts
Citi Fraud Department Numbers and Other Contacts

For immediate assistance with suspected fraud, the fastest option is to call the phone number printed on the back of your Citi card or log into the official Citi Mobile App to lock your card.

If you do not have your card with you, use the official Citi Fraud Department contact numbers below:

Citi Cards (Credit Cards)

  • U.S. Fraud Support: 1-800-950-5114
  • Alternative Direct Fraud Line: 1-800-695-4981
  • International Collect Support: +1-210-677-0065 or +1-605-335-2222
  • TTY Accessibility Services: 711 or 1-800-325-2865

Citibank Online & Banking Support

  • Online Fraud Protection: 1-800-374-9700
  • General Banking Support: 1-888-248-4226
  • CitiBusiness Online Support: 1-800-285-1709

Identity Theft Solutions

If your personal information or identity has been stolen, Citi provides dedicated specialists to help rebuild your credit at:

  • Identity Theft Support Line: 1-866-771-3354 or 1-800-274-6660

Security Warning & Best Practices

  • Spotting Scams: Scammers frequently spoof incoming numbers to resemble bank alerts. If you receive an unexpected call or text message asking for personal information, hang up immediately.

  • What Citi Will Never Ask For: Citi representatives will never call, text, or email you to request your passwords, full Social Security Number (SSN), Debit PIN, or One-Time Passcodes (OTP).

  • Email Phishing: If you received a suspicious email impersonating Citi, do not click any links; forward it as an attachment to spoof@citi.com.
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