A well-known Ukrainian hacker, Andrey Hodirevski, is reportedly linked to the massive Target breach that hit the retailer in late 2013. Hodirevski is a prominent cybercriminal and carder, and while no public information has proven his link to the breach, cybersecurity experts wouldn't necessarily be surprised if he played a role in the operation.
"He has a high reputation and credibility among other carders and hackers," said Dmitry Volkov, head of the Group-IB computer security firm. "He is not just another carder."
There is significant concern of cyberattacks targeting retailers, exposing millions of customers, as companies seem to be unable to stop these types of attacks from happening.
"It's circumstantial, but there's a lot of it," noted Mark Lanterman, CTO of Computer Forensic Services. "His website is up and active and going stronger than ever, which is disappointing."