BlackBerry's CEO, John Giamatteo, is facing a lawsuit filed by a former executive alleging a pattern of sexual harassment, gender discrimination, and retaliation. Prior to his promotion, BlackBerry had conducted a quiet investigation into several claims against him by female employees. The lawsuit, which highlights allegations of 'Mad-Men era sexual harassment,' was filed in California and accuses BlackBerry of hiring Giamatteo despite being aware of these complaints. The case, originating from BlackBerry’s San Francisco office, has raised questions about the company's handling of sexual and workplace harassment claims.