Responsible disclosure

Capital One is committed to maintaining the security of our systems and our customers’ information. We appreciate and encourage security researchers to contact us to report potential vulnerabilities identified in any product, system, or asset belonging to Capital One.

If you believe you have identified a potential security vulnerability, please share it with us by following the submission guidelines below. Thank you in advance for your submission, we appreciate researchers assisting us in our security efforts. *Please note, Capital One does not operate a public bug bounty program and we make no offer of reward or compensation in exchange for submitting potential issues.

If you suspect fraud on your account please visit our “Report Fraud” Center.

Responsible disclosure program guidelines

Researchers shall disclose potential vulnerabilities in accordance with the following guidelines:

  1. Do not engage in any activity that can potentially or actually cause harm to Capital One, our customers, or our employees.
  2. Do not engage in any activity that can potentially or actually stop or degrade Capital One services or assets.
  3. Do not engage in any activity that violates (a) federal or state laws or regulations or (b) the laws or regulations of any country where (i) data, assets or systems reside, (ii) data traffic is routed or (iii) the researcher is conducting research activity.
  4. Do not store, share, compromise or destroy Capital One or customer data. If Personally Identifiable Information (PII) is encountered, you should immediately halt your activity, purge related data from your system, and immediately contact Capital One. This step protects any potentially vulnerable data, and you.
  5. Do not initiate a fraudulent financial transaction.
  6. Provide Capital One reasonable time to fix any reported issue, before such information is shared with a third party or disclosed publicly.

By responsibly submitting your findings to Capital One in accordance with these guidelines Capital One agrees not to pursue legal action against you. Capital One reserves all legal rights in the event of noncompliance with these guidelines.

Once a report is submitted, Capital One commits to provide prompt acknowledgement of receipt of all reports (within two business days of submission) and will keep you reasonably informed of the status of any validated vulnerability that you report through this program.

Out of scope vulnerabilities

Certain vulnerabilities are considered out of scope for our Responsible Disclosure Program. Out-of-scope vulnerabilities include:

  • Physical Testing
  • Social Engineering. For example, attempts to steal cookies, fake login pages to collect credentials
  • Phishing
  • Denial of service attacks
  • Resource Exhaustion Attacks

Submission format

When reporting a potential vulnerability, please include a detailed summary of the vulnerability, including the target, steps, tools, and artifacts used during discovery (screen captures welcome).

Submission instructions

Capital One uses HackerOne to triage and validate responsibly disclosed vulnerability reports. Please submit your report via HackerOne - https://hackerone.com/capital-one.

Submitting your report via HackerOne will help ensure timely validation. If you are unable to report via HackerOne, you may email us at responsibledisclosure@capitalone.com.