Brooke left the former Computer Associates at the end of last week after two-and-a-half years with the US software firm.
He will join H&K's B2B tech team on 25 September. His arrival swells the division to 17 staff.
CA comms officer Tina Horne told PRWeek that the company is seeking a replacement for Brooke. She declined to give further details other than to confirm the position would remain unchanged.
Before moving to CA, Brooke was business group director at Brodeur, now Pleon, where he worked for clients such as IBM. On the IBM account he worked in tandem with Ketchum and its then director of technology Mark Jackson.
Jackson is now H&K's technology MD, and Brooke will report to him. ‘Lee will be working on our key accounts such as Sony and GN Netcom, and will be responsible for winning new business,' said Jackson.
Brooke was on holiday and unavailable for comment on his move.
CA has been rocked by a scandal around a series of accounting irregularities that were discovered more than two years ago. Former CEO Sanjay Kumar pleaded guilty in April to a $2.2bn accounting fraud charge and is awaiting sentencing. Inferno PR has advised the firm on UK PR since last year, when it won the brief from Lewis PR (PRWeek, 7 January 2005).