The medusa ransomware group listed Great Valley School District on its data leak site on 2023-11-29. Sector: Education Domains named: gvhs.gvsd.org, malvern.at Claim as published on the leak site: Great Valley School District is located on the Philadelphia Main Line in eastern Chester County, Pennsylvania. The district provides public education for students in Charlestown, East Whiteland, and Willistown townships, and the borough of Malvern.At the moment, it has more than 4,000 students