Darren Ian Hodgetts used a colleague's computer log-on to leak confidential information to a target of a drugs investigation for a promised fee of $5000.
The motorway support officer pleaded guilty to accessing the computer system for a dishonest purpose after police busted a large-scale drug ring in November 2011 and made 22 arrests.
Hodgetts admitted he used the national police computer system to look up details of an Auckland man who was under surveillance.
He pleaded guilty in the Auckland District Court to accessing the computer system for a dishonest purpose, and was sentenced to four months of community detention.
He was one of two non-sworn staff arrested for making unauthorised National Intelligence Application checks relating to the drug-ring probe.