PCI DSS

Framework Name

‍Payment Card Industry Data Security Standard (PCI DSS), current version 4.0.1

Type

‍Mandatory (contractual)

Region / Jurisdiction

‍Global

Enforcing Body / Certifying Party

‍PCI Security Standards Council, founded by Visa, Mastercard, American Express, Discover, and JCB. Compliance is validated by Qualified Security Assessors (QSAs) and enforced in practice by acquiring banks and payment processors through merchant agreements

Penalty / Consequence of Non-Compliance

‍Fines from the acquiring bank or card networks, commonly ranging from a few thousand to over $100,000 per month for continued non-compliance, along with the risk of losing the ability to process card payments entirely

What It Is & Why It Matters

PCI DSS is a security standard covering how companies store, process, and transmit credit card data. It sets 12 core requirements spanning network security, access control, encryption, and monitoring, and it applies to any business that touches card data, whether that means a large retailer or a small SaaS company processing payments through a third party. No government wrote this standard and no law requires it. It exists because the major card networks created it and require it as a condition of being allowed to accept their cards at all.

That's exactly why it matters. PCI DSS sits in an unusual middle ground: nobody is legally obligated to follow it, but in practice, no business that takes credit card payments can operate without it. The card networks and acquiring banks enforce it directly through the contracts that let you process payments in the first place, so non-compliance doesn't just risk a fine, it risks the ability to accept cards at all, which for most businesses is not a viable option to lose.

Who Needs It

• You accept, store, process, or transmit credit or debit card payments in any part of your business
• You use a third-party payment processor (Stripe, Square, Razorpay) but still handle card data on your own systems or website
• You are a service provider whose customers rely on you to protect card data on their behalf
• Your acquiring bank or payment processor has sent you a compliance questionnaire or requested an Attestation of Compliance (AOC)