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+# Security Policy
+
+## Reporting a vulnerability
+
+Do not publish suspected vulnerability details in public issues, discussions,
+or pull requests. Send reports to [support@linux-gaming.ru](mailto:info@linux-gaming.ru).
+
+Please include enough information to reproduce and assess the issue:
+
+- PortProtonQt version or commit and installation source.
+- Linux distribution and relevant launcher or runtime details.
+- Affected feature and clear reproduction steps.
+- Expected behavior, observed behavior, and potential security impact.
+- A minimal proof of concept or sanitized logs, if available.
+- A suggested mitigation or fix, if known.
+
+Do not include passwords, tokens, private keys, or personal data. Redact
+usernames, home directory paths, and other sensitive details from logs where
+practical. Test only with systems, accounts, and files you own or are
+authorized to use.
+
+## Scope
+
+This policy covers security issues in PortProtonQt, including its handling of
+local files and archives, launcher data, network requests, downloaded content,
+and application configuration. Issues in third-party launchers, libraries,
+compatibility tools, or distribution packages should also be reported to their
+maintainers. Please report cases where PortProtonQt's handling creates or
+increases the risk.
+
+## Supported versions
+
+Please check whether the issue affects the latest published release and
+include the affected version in your report. Older releases may not receive
+security fixes; users should update when a fix becomes available.
+
+## Coordinated disclosure
+
+Keep vulnerability details private while maintainers investigate and prepare a
+fix or mitigation. Coordinate public disclosure with the maintainers, allowing
+reasonable time for a fix to reach users. Response and remediation times depend
+on the issue; no fixed response time is promised.