March 12 (Reuters) - Canadian telecommunications and

business services firm Telus ( TU ) is investigating a

cybersecurity incident involving unauthorized access to some of

its systems, a company spokesperson said Thursday.

The ShinyHunters hacking group told Reuters in a message it

stole at least 700 terabytes of data from Telus ( TU ).

( Reporting by AJ Vicens in Detroit. Editing by Chizu Nomiyama )