Security at Stripe

A PCI-certified auditor has audited Stripe. We’re a certified PCI Service Provider Level 1. This is the most stringent level of certification available in the payments industry. To accomplish this, we use the best-in-class security tools and practices to maintain a high level of security at Stripe.

HTTPS and HSTS for secure connections

Stripe forces HTTPS for all services using TLS (SSL), including our public website and the Dashboard to ensure secure connections:

• Stripe.js is served only over TLS.
• Stripe’s official libraries connect to Stripe’s servers over TLS and verify TLS certificates on each connection.

We regularly audit the details of our implementation, including the certificates we serve, the certificate authorities we use, and the ciphers we support. We use HSTS to ensure that browsers interact with Stripe only over HTTPS. Stripe is also on the HSTS preloaded lists for both Google Chrome and Mozilla Firefox.

Sensitive data and communication encryption

All card numbers are encrypted at rest with AES-256. Decryption keys are stored on separate machines. None of Stripe’s internal servers and daemons can obtain plain text card numbers but can request that cards are sent to a service provider on a static allowlist. Stripe’s infrastructure for storing, decrypting, and transmitting card numbers runs in a separate hosting environment, and doesn’t share any credentials with Stripe’s primary services including our API and website.

Vulnerability disclosure and reward program

By submitting a security bug or vulnerability to Stripe through HackerOne, you acknowledge that you’ve read and agreed to the program terms and conditions. Please refer to our policy on HackerOne for more information on how to participate in our bug bounty program.