The ShinyHunters ransomware group listed Hallmark Cards, Inc. & Hallmark Plus on its data leak site on 2026-03-31. Country: US Sector: Retail & E-Commerce Claim as published on the leak site: Over 7.9M Salesforce records containing PII and other internal corporate data have been compromised. This is a final warning to reach out by 2 Apr 2026 before we leak along with several annoying (digital) problems that'll come your way. Make the right decision, don't be the next headline. | Updated: 31 Mar 2026 | Warning: FINAL WARNING