The Desjardins Group data theft is much more widespread than first thought and actually hit 4.2 million members, the banking co-operative’s chief executive said Friday.

Desjardins Group initially reported in June that 2.9 million customers had been impacted by the theft — 2.7 million individuals and 173,000 businesses in Ontario and Quebec.
The breach involved personal information — including social insurance numbers — but did not include banking information or passwords.