Why You Must Never Send Credentials Through Free Proxies
Free proxies can log passwords, API keys, and session tokens. Learn why open pools are unsafe for authenticated traffic.
Free proxies can log passwords, API keys, and session tokens. Learn why open pools are unsafe for authenticated traffic.
What free proxy operators can see
HTTP traffic is visible in cleartext. HTTPS via CONNECT is encrypted to the origin — unless the proxy performs TLS interception. Free operators have no contractual obligation to protect your data and may monetize logs.
Common credential leaks
- Authorization headers on HTTP endpoints
- API keys in query strings
- Session cookies without Secure flag
- Basic auth in proxy URLs logged by apps
Related: securing API keys.
When free proxies are acceptable
Only for unauthenticated, non-sensitive fetches against public data — and still validate responses for injection. Run health checks and never mix free pools with internal services.
Related: free vs paid pools — detecting malicious nodes.
Need proxies at scale?
proxies.st offers health-checked HTTP and SOCKS pools with dashboard access, API keys, and plain-text bulk feeds for pipelines.
Related guides
SOCKS5 Authentication Methods and Security
Compare SOCKS5 no-auth, username/password, and GSSAPI. Security implications for production proxy deployments.
Securing API Keys in Proxy-Backed Pipelines
Protect API keys and secrets when routing automation traffic through rotating HTTP and SOCKS proxy pools.