Ransomware renders Infosys McCamish Systems' business applications unavailable

On November 2, 2023, ransomware encrypted systems operated by Infosys McCamish Systems, a U.S.-based subsidiary providing outsourced insurance and financial-sector business processing services. The company confirmed that affected applications and systems became unavailable, interrupting its ability to provide technology-enabled services. Substantial remediation and restoration were completed by December 31, 2023. Infosys later reported USD 38 million in combined lost contracted revenue and incident-related costs as of March 31, 2024. Forensic investigation identified earlier unauthorized activity beginning October 29, distinct from the November 2 discovery and service disruption.