Target Hackers Wrote Partly in Russian, Displayed High Skill, Report Finds

Target Hackers Wrote Partly in Russian, Displayed High Skill, Report Finds

wsj.com - by Danny Yadron - January 16, 2014

The holiday data breach at Target Corp. TGT -0.94% appeared to be part of a broad and highly sophisticated international hacking campaign against multiple retailers, according to a report prepared by federal and private investigators that was sent to financial-services companies and retailers.

The report offers some of the first details to emerge about the source of the attack that compromised 40 million credit- and debit-card accounts and personal data for 70 million people. It also provided further evidence the attack on Target during peak holiday shopping was part of a concerted effort by skilled hackers.

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