Program Overview
USPS - United States Postal Service runs a vulnerability disclosure program on HackerOne. The program has 17 in-scope assets and is managed by HackerOne's triage team.
In-Scope Assets
| Asset | Type | Max Severity | Eligible |
|---|---|---|---|
| gateway.usps.com | URL | Critical | No Bounty |
| https://about.usps.com/what/government-services/election-mail/ | URL | Critical | No Bounty |
| https://holdmail.usps.com/holdmail/ | URL | Critical | No Bounty |
| https://redelivery.usps.com/redelivery/ | URL | Critical | No Bounty |
| https://www.usps.com/postalone/ | URL | Critical | No Bounty |
| id.usps.com | URL | Critical | No Bounty |
| internationalclaims.usps.com | URL | Critical | No Bounty |
| iv.usps.com | URL | Critical | No Bounty |
| moversguide.usps.com | URL | Critical | No Bounty |
| ncoa.usps.gov | URL | Critical | No Bounty |
| pi.usps.com | URL | Critical | No Bounty |
| reg.usps.com | URL | Critical | No Bounty |
| retail-pi.usps.com | URL | Critical | No Bounty |
| store.usps.com | URL | Critical | No Bounty |
| www.liteblue.usps.gov | URL | Critical | No Bounty |
| www.usps.com | URL | Critical | No Bounty |
| www.usps.gov | URL | Critical | No Bounty |
Tips for Hacking USPS - United States Postal Service
- Read the policy — Understand what's in scope, out of scope, and any specific testing restrictions before you start.
- Enumerate the attack surface — Use subdomain enumeration and directory bruteforcing to map all accessible endpoints.
- Focus on high-impact bugs — Look for SQL injection, SSRF, and IDOR vulnerabilities first.
- Test authentication flows — Check for OAuth misconfigurations and CSRF in login/signup flows.
- Write clear reports — Include steps to reproduce, impact assessment, and suggested remediation. Use Burp Suite to capture evidence.
Frequently Asked Questions
How do I start hacking USPS - United States Postal Service?
Sign up on HackerOne, read the program policy carefully, review the in-scope assets listed above, and start testing. Always stay within scope and follow responsible disclosure guidelines.
Does USPS - United States Postal Service pay bounties?
No, USPS - United States Postal Service runs a Vulnerability Disclosure Program (VDP) without monetary rewards. You may receive recognition or swag.
What types of vulnerabilities does USPS - United States Postal Service accept?
USPS - United States Postal Service accepts reports for vulnerabilities found in their 17 in-scope assets. Common accepted vulnerability types include XSS, SQL injection, SSRF, IDOR, authentication bypass, and RCE. Check the program policy for specific exclusions.