The medusa ransomware group listed Kramer Enterprises on its data leak site on 2023-06-09. Sector: Other Claim as published on the leak site: Kramer Enterprises was founded in 1999, provides services in Southern Wisconsin for the construction of flat surfaces and specializes in stamped and colored decorative concrete. The company's clients include Fort Atkinson, Jefferson, Whitewater, Watertown, Janesville, Cambridge and surrounding areas.