Contact Information for Merchants
To contact us, simply dial the number below. A Discover Network representative will contact you as soon as possible
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Surcharge Notification
Merchants who intend to surcharge Discover transactions must provide notice directly to Discover and the merchant's acquirer 30 days before beginning to surcharge.
24/7 Fraud Prevention
If you suspect a transaction is fraudulent or are suspicious of the customer, obtain an authorization and address verification by calling 1-800-347-1111. Ask for a Code 10 authorization.
Fraud Prevention Solutions
Discover Acquired Merchants:
To get technical assistance or help with resetting your Fraud & Risk Center Log In ID and/or Password, call 1-800-347-0240.
For more information, please email us at globalfraudsolutions@discover.com.
Note: When emailing us, please do not share personal, sensitive or confidential information.
Third Party Acquired Merchants:
This product may be available through your acquirer or processor. Please contact them directly for assistance.
Click here for a list of acquirers.
Data Security
1-800-347-3083
Call Mon–Fri 8:30am to 12:30pm and 1:30pm to 4:00pm
Eastern Time, excluding holidays*
Questions on Security or PCI Compliance:
Report data compromise or cardholder data breach:
1-800-347-3083
Call Mon–Fri 8:30am to 4:00pm
Eastern Time, excluding holidays*
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