McGraw-Hill is a organization tracked across 2 threat clusters and 3 intelligence report mentions on ThreatCluster. First observed April 14, 2026; most recent activity May 19, 2026.
7-Eleven confirmed a cyberattack that occurred in April 2026, where unauthorized access to its internal systems exposed personal information linked to franchisee applications. The breach was claimed by the ShinyHunters…
In April 2026, McGraw Hill confirmed a data breach affecting approximately 13.5 million user accounts, attributed to a misconfiguration in its Salesforce environment. The ShinyHunters extortion group claimed…