Blackberry CEO starts company overhaul with staff shake-up

Blackberry’s new CEO John Chen took his first steps to overhaul the company on Monday by showing three executives the door.

Blackberry announced on Monday that that COO Kristian Tear and CMO Frank Boulben will leave the firm. CFO Brian Bidulka has been replaced by head of compliance James Yersh, but will stay on as a special advisor to the CEO for the remainder of the financial year.