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PCI requirements and who needs to follow them

Basis Theory

Third-Party Service Provider ( TPSP or "service provider") refers to an entity other than the Merchant, Acquirer, or Issuer involved in storing, processing, or transmitting card data. If an actual data breach does occur, companies can also expect fines for anyone whose data has been breached or has been affected in some way by a data breach.

PCI DSS 88