Education publishing giant McGraw-Hill has confirmed a data breach following an extortion attempt, with more than 100GB of stolen data now publicly distributed online, exposing the personal information of approximately 13.5 million users. The breach, disclosed in April 2026, stems from a misconfiguration in McGraw-Hill’s Salesforce environment. According to the company, the incident exposed “a […] The post McGraw Hill Confirms Data Breach Exposing 13.5 Million Users’ Personal Data appeared first on Cyber Security News.