Total System Services, Inc.

Total System Services, Inc., known as TSYS, is a payment processing company headquartered in the United States. The firm provides payment processing services to merchants, supporting transaction authorization, settlement, and related financial flows. Its offerings include processing for traditional credit and debit card transactions as well as prepaid card programs. TSYS operates a legacy merchant business unit identified as Cayan, which handles certain merchant-facing services. The company maintains separate transaction processing systems that are designed to remain isolated from administrative environments.

In December 2020, TSYS experienced a ransomware attack carried out by the Conti group, which deployed Ryuk malware. The attackers exfiltrated and released over ten gigabytes of data, asserting that prepaid card information had been compromised. TSYS confirmed that the breach affected administrative systems supporting the Cayan unit while its core transaction processing platforms remained isolated and operational. The company characterized the incident as immaterial to its overall operations and emphasized containment measures and continued business continuity. TSYS is recognized as a major player in the payment processing industry, with a focus on securing its transaction infrastructure against cyber threats.