Valve Bug Bounty Program

Program Overview

Valve runs a bug bounty program on HackerOne. The program has 21 in-scope assets and is managed by HackerOne's triage team.

In-Scope Assets

Asset	Type	Max Severity	Eligible
*.steamstatic.com	WILDCARD	Critical	Bounty
Steam Client	OTHER	Critical	Bounty
Steam Servers	OTHER	Critical	Bounty
api.steampowered.com	URL	Critical	Bounty
com.valvesoftware.Steam	APPLE_STORE_APP_ID	Critical	Bounty
com.valvesoftware.Steam	GOOGLE_PLAY_APP_ID	Critical	Bounty
developer.valvesoftware.com	URL	Low	Bounty
help.steampowered.com	URL	Critical	Bounty
https://github.com/valvesoftware	SOURCE_CODE	Critical	No Bounty
partner.steamgames.com	URL	Critical	Bounty
partner.steampowered.com	URL	Critical	Bounty
playartifact.com	URL	Critical	Bounty
steamcommunity.com	URL	Critical	Bounty
store.steampowered.com	URL	Critical	Bounty
storefront.steampowered.com	URL	Critical	No Bounty
support.steampowered.com	URL	Critical	Bounty
wiki.teamfortress.com	URL	Critical	No Bounty
www.counter-strike.net	URL	Critical	Bounty
www.dota2.com	URL	Critical	Bounty
www.teamfortress.com	URL	Critical	Bounty
www.valvesoftware.com	URL	Critical	Bounty

Out-of-Scope Assets

• list.valvesoftware.com
• translation.steampowered.com
• valvestore.forfansbyfans.com,store.valvesoftware.com
• www.steamgames.com
• www.steampowered.com

Tips for Hacking Valve

1. Read the policy — Understand what's in scope, out of scope, and any specific testing restrictions before you start.
2. Enumerate the attack surface — Use subdomain enumeration and directory bruteforcing to map all accessible endpoints.
3. Focus on high-impact bugs — Look for SQL injection, SSRF, and IDOR vulnerabilities first.
4. Test authentication flows — Check for OAuth misconfigurations and CSRF in login/signup flows.
5. 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 Valve?

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 Valve pay bounties?

Yes, Valve offers monetary rewards for valid security vulnerabilities.

What types of vulnerabilities does Valve accept?

Valve accepts reports for vulnerabilities found in their 21 in-scope assets. Common accepted vulnerability types include XSS, SQL injection, SSRF, IDOR, authentication bypass, and RCE. Check the program policy for specific exclusions.