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Security at Stripe
Security is one of the biggest considerations in everything we do. If you have any questions after reading this, or encounter any issues, please let us know.
SECURING YOUR INTEGRATION
For more about being PCI compliant and establishing good security practices, check out our integration security guide.
Stripe has been audited by a PCI-certified auditor and is certified to PCI Service Provider Level 1. This is the most stringent level of certification available in the payments industry. To accomplish this, we make use of 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.
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: the certificates we serve, the certificate authorities we use, and the ciphers we support. We use HSTS to ensure browsers interact with Stripe only over HTTPS. Stripe is also on the HSTS preloaded lists for both Google Chrome and Mozilla Firefox.
Encryption of sensitive data and communication
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 are able to obtain plaintext card numbers; instead, they can just request that cards be sent to a service provider on a static whitelist. Stripe’s infrastructure for storing, decrypting, and transmitting card numbers runs in separate hosting infrastructure, and doesn’t share any credentials with Stripe’s primary services (API, website, etc.).
PGP
Stripe has two PGP keys to encrypt your communications with Stripe, or verify signed messages you receive from Stripe. Which key you make use of is dependent on the information needing to be transmitted:
To securely contact Stripe, use our general PGP key
To send sensitive data, such as credit card information as part of a data import, use our data migration PGP key
If you’re unfamiliar with PGP, check out GPG, and start by importing a public key.
Vulnerability disclosure and reward program
Our security team rapidly investigates all reported security issues. If you believe you’ve discovered a bug in Stripe’s security, please get in touch at security@stripe.com (optionally using our general PGP key). We will respond as quickly as possible to your report. We request that you not publicly disclose the issue until it has been addressed by Stripe.
We understand the hard work that goes into security research. To show our appreciation for researchers who help us keep our users safe, we operate a reward program for responsibly disclosed vulnerabilities. Stripe rewards the confidential disclosure of any design or implementation issue that could be used to compromise the confidentiality or integrity of our users’ data (such as by bypassing our login process, injecting code into another user’s session, or instigating action on another user’s behalf).
A minimum reward of $500 USD may be provided for the disclosure of qualifying bugs. At our discretion, we may increase the reward amount based on the creativity or severity of the bugs. If you report a vulnerability that does not qualify under the above criteria, we may still provide a minimum reward of $100 USD if your report causes us to take specific action to improve Stripe’s security.
As with most security reward programs, we ask that you use common sense when looking for security bugs. Vulnerabilities must be disclosed to us privately with reasonable time to respond, and avoid compromise of other users and accounts, or loss of funds that are not your own. We do not reward denial of service, spam, or social engineering vulnerabilities. Although Stripe itself and all services offered by Stripe are eligible, vulnerabilities in third-party applications that use Stripe are not.
As with most security reward programs, there are some restrictions:
We will only reward the first person to responsibly disclose a bug to us
Any bugs that are publicly disclosed without providing us a reasonable time to respond will not be rewarded
Whether to reward the disclosure of a bug and the amount of the reward is entirely at our discretion, and we may cancel the program at any time
Your testing must not violate any laws
We can’t provide you a reward if it would be illegal for us to do so, such as to residents of countries under current U.S. sanctions
