Posts Tagged: Home Depot


1
Apr 15

‘Revolution’ Crimeware & EMV Replay Attacks

In October 2014, KrebsOnSecurity examined a novel “replay” attack that sought to exploit implementation weaknesses at U.S. financial institutions that were in the process of transitioning to more secure chip-based credit and debit cards. Today’s post looks at one service offered in the cybercrime underground to help thieves perpetrate this type of fraud.

Several U.S. financial institutions last year reported receiving tens of thousands of dollars in fraudulent credit and debit card transactions coming from Brazil and hitting card accounts stolen in recent retail heists, principally cards compromised as part of the October 2014 breach at Home Depot. The affected banks were puzzled by the attacks because the fraudulent transactions were all submitted through Visa and MasterCard‘s networks as chip-enabled transactions, even though the banks that issued the cards in question hadn’t yet begun sending customers chip-enabled cards.

Seller in underground forum describes his "Revolution" software to conduct  EMV card fraud against banks that haven't implemented EMV correctly .

Seller in underground forum describes his “Revolution” software to conduct EMV card fraud against banks that haven’t implemented EMV fully.

Fraud experts said the most likely explanation for the activity was that crooks were pushing regular magnetic stripe transactions through the card network as chip card purchases using a technique known as a “replay” attack. According to one bank interviewed at the time, MasterCard officials explained that the thieves were likely in control of a payment terminal and had the ability to manipulate data fields for transactions put through that terminal. After capturing traffic from a real chip-based chip card transaction, the thieves could insert stolen card data into the transaction stream, while modifying the merchant and acquirer bank account data on-the-fly.

Recently, KrebsOnSecurity encountered a fraudster in a popular cybercrime forum selling a fairly sophisticated software-as-a-service package to do just that. The seller, a hacker who reportedly specializes in selling skimming products to help thieves steal card data from ATMs and point-of-sale devices, calls his product “Revolution” and offers to provide buyers with a list of U.S. financial institutions that have not fully or properly implemented systems for accepting and validating chip-card transactions. Continue reading →


18
Sep 14

Home Depot: 56M Cards Impacted, Malware Contained

Home Depot said today that cyber criminals armed with custom-built malware stole an estimated 56 million debit and credit card numbers from its customers between April and September 2014. That disclosure officially makes the incident the largest retail card breach on record.

pwnddepotThe disclosure, the first real information about the damage from a data breach that was initially disclosed on this site Sept. 2, also sought to assure customers that the malware used in the breach has been eliminated from its U.S. and Canadian store networks.

“To protect customer data until the malware was eliminated, any terminals identified with malware were taken out of service, and the company quickly put in place other security enhancements,” the company said via press release (PDF). “The hackers’ method of entry has been closed off, the malware has been eliminated from the company’s systems, and the company has rolled out enhanced encryption of payment data to all U.S. stores.”

That “enhanced payment protection,” the company said, involves new payment security protection “that locks down payment data through enhanced encryption, which takes raw payment card information and scrambles it to make it unreadable and virtually useless to hackers.” Continue reading →