Unfortunately, it was another busy data breach week. Here’s a summary of the major ones.

Delta Airlines admitted in a statement that the payment card data of several hundred thousand customers might have been compromised by malware between September 26 and October 12, 2017, through a third-party vendor ([24]7.ai that provides online chat services to Delta. The information exposed included customers’ names, addresses, CVV numbers, expiration dates and payment card information.

This is the same malware that recently impacted Sears, Under Armour, Hudson Bay, and Boeing.

Hacker group JokerStash, which allegedly caused data breaches at Whole Foods, Omni Hotels and Chipotle, just hit Saks and Lord & Taylor, which have suffered a data breach of over five million credit and debit cards from May 2017 to the present day. The hackers are reported to be selling the credit card information on the Dark Web as we write.

And last, but not least, a class action lawsuit was filed against Panera Bread Co. in Illinois federal court within a week of the company reporting that it had been the victim of a data breach of its customer information through its customer rewards program.