WiseTech Global whistleblower Christine Holman says she was told she would never get another director role after quitting the board of the technology company and accusing its billionaire founder Richard White of intimidation, bullying and poor corporate governance.

Holman made her first public comments about the WiseTech scandal on Wednesday at a superannuation summit, where corporate watchdog chairman Joe Longo noted an outbreak of “issues in the bedroom migrating to the boardroom” but warned that he had limited powers to respond.