The malware coder who wrote the sniffer program used in the infamous TJX credit card heist has been jailed for two years.

Stephen Watt, 25, from New York, was also order to spend a further three years on probation following his release. He was also ordered to pay $171.5m in restitution.

Watts was part of a gang led by Alberto Gonzalez that captured more than 40 million credit and debit card records from TJX and other retailers between 2003 and 2007. The gang typically used the insecure wireless networks of retail branches to launch deeper attacks on corporate systems, ultimately targeting credit card databases.

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