The group being implicated has stolen over 160 million card numbers over the years by hacking organizations, including Heartland Payment Systems, Visa and 7-Eleven.
Banks impacted by the Target data breach have banded together to file a class-action against the retail giant, as well as against security firm Trustwave.
After claiming it saw no evidence that payment card data was taken in a breach, the chain now says fewer than 25,000 records were "illegally accessed."
Prior to its massive breach, Target seems not to have responded to multiple alerts from security company FireEye involving suspicious activity on the retailer's network.
An attempted intrusion is still being investigated, but Texas-based Sally Beauty has no evidence to suggest that 282,000 payment cards found in an online underground crime market were pilfered from the worldwide retailer.
In the aftermath of the Target breach, there is a huge need for all the people who are engaging with technology to understand more about cyber threats and ways they can account for these before and after something goes down.
The malware is based on the leaked code of Zeus and RAM-scraping malware.
The associations will explore options for improved information sharing and implementation of card security technology.
Target announced last week that hackers compromised its systems using credentials stolen from a third party vendor and, on Thursday, Fazio Mechanical confirmed that it was the victim of an attack.
Executives with Target and Neiman Marcus were among the individuals who testified before the Senate Judiciary Committee on Tuesday.
White Lodging Services Corporation is investigating a suspected breach of its point-of-sale systems, the Indiana-based hotel management company announced on Monday.
A worldwide point-of-sale malware operation involving a relatively new trojan - called ChewBacca - has impacted dozens of retailers in the U.S., according to RSA researchers.
Stolen vendor credentials is what led to a massive malware attack on Target's point-of-sale machines, ultimately resulting in the theft of 40 million payment cards, among other information.
After Target and Neiman Marcus, Michaels Stores is the next in a line of U.S. retailers to reveal that it is investigating a possible security breach that may have resulted in the compromise of customer payment cards.
Researchers at Barracuda Labs discovered that the toy and game website was infected.
On Wednesday, the retailer's CEO Karen Katz announced that malware on its payment systems may have impacted more than one million cards.
IntelCrawler concluded on Sunday that 23-year-old Rinat Shibaev - not 17-year-old Sergey Taraspov, as the company previously reported - is the writer of the malware that infected Target's point-of-sale systems.
At the border of U.S. and Mexico, two individuals were arrested in connection with the late-2013 Target breach.
The attack on Neiman Marcus point-of-sale systems dates back to July 2013 and the threat was not completely mitigated until Sunday, unnamed people briefed on the retailer's investigation told the New York Times.
The operation that likely led to the infection of Target's point-of-sale systems is known as KAPTOXA, according to a release by iSIGHT Partners.
Researchers with cyber intelligence company IntelCrawler have identified a new point-of-sale (POS) malware, known as 'Decebal,' available for purchase on underground forums.
The refund was agreed upon under a Federal Trade Commission (FTC) settlement.
Malware found on the payment systems of Neiman Marcus led to the compromise of card data for an undisclosed number of shoppers, but PIN data is not at risk because the retailer does not use PIN pads in its stores.
A class-action complaint was filed against Neiman Marcus in the Eastern District of New York on Monday, just days after the major retailer announced that an undisclosed number of payment cards may have been stolen in a breach.
High-end retailer Neiman Marcus is now added to the list of major retailers confirming credit card breaches.
Target CEO Gregg Steinhafel confirmed in a CNBC interview on Monday that malware introduced on point-of-sale devices is what enabled thieves to steal 40 million cards and other personal information.
On Thursday, the online retailer began accepting the popular digital currency.
In addition to an earlier revelation that 40M cards were pilfered, the PII of up to 70 million individuals was also stolen, according to a Friday statement by Target.
A group of individuals communicating in underground forums are attempting to decrypt a 50GB dump of Triple DES encrypted PIN numbers believed to have been acquired in the massive 2013 attack on retail giant Target.
Due to the glitch, some travelers were able to purchase $400 flights for $48 or less.