It was widely reported in 2007.
CIMS is used not only to track voter allegiance in a given riding—something every political party attempts—but also a host of other data gathered in the course of an MP's constituency office duties.
But the Conservatives use a single clearing house for all data collection, storage, datamining, mailing lists, voter tracking and any other partisan use such information may serve.
Apparently there was a bit of a snafu there. The prime minister at the time, Stephen Harper, asked the Conservative Party to investigate allegations against embattled MP Eve Adams. She crossed the floor a couple of times.
Some Conservative party members in the riding have complained of Adams's unauthorized use of their personal information contained in the party's CIMS database (Constituency Information Management System)—
This is from the National Post, by the way.
—when she's “a member of Parliament who has no history with them on a personal level and does not represent them in Parliament.”
That's what citizens were already complaining about. They were getting mail from this MP, and I can tell you that I was getting it from a Conservative MP. It had nothing to do with me. That's reported in the National Post.