Delta announced Wednesday that a "small subset" of customers may have had their payment information compromised online.

In wake of cyber security breach, Delta launches credit monitoring site

In the wake of a cyber security breach that may have exposed several hundred thousand customers, Delta Air Lines has launched a credit monitoring enrollment site for customers who could be affected.

The website at https://delta.allclearid.com allows people who may have been affected to enroll in AllClear fraud alerts with credit monitoring. Delta says it partnered with AllClear ID to offer free credit monitoring services for two years starting April 7, 2018 to customers who may have been affected.

Those who believe they made a purchase on the delta.com desktop site between Sept. 26 and Oct, 12, 2017 should visit the site to enroll in the free credit monitoring.

Delta said that malware in online chat software it used on its website allowed unauthorized access to card payment information entered manually “on any page of the delta.com desktop platform” from Sept. 26 to Oct. 12 of last year.

The information that could have been exposed included name, address, payment card number, CVV number and expiration date.

“Customers did not have to interact with the online chat tool to be impacted,” Delta says on its delta.com/response web page on the cyber security breach.

Delta said other customer personal information like passport, government ID, security or SkyMiles information was not affected.

The mobile delta.com site and the Fly Delta app were not affected, and Delta Wallet transactions were also not compromised, the airline said.

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