The ShinyHunters ransomware group listed Jack Henry & Associates on its data leak site on 2026-08-28. Country: US Sector: Financial Services Claim as published on the leak site: This is a final warning to reach out by 1 Sep 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: 29 Aug 2026 | Warning: FINAL WARNING