What is Open proxy?
An open proxy is a proxy server that accepts connections from anyone, often because it was misconfigured or deliberately left public. Attackers and scrapers abuse open proxies to hide their origin. Their IPs are widely catalogued in public feeds, which makes them easy to flag.
Open proxies include accidental misconfigurations and intentionally public SOCKS/HTTP proxies. Because they are abused at scale for credential stuffing, spam, and scraping, security feeds track them aggressively.
An IP serving an open proxy is high-risk by default, since legitimate users rarely route through one.
How IPLogs handles it
IPLogs aggregates public open-proxy feeds (TheSpeedX, Proxifly, FireHOL) and verifies live SOCKS5/HTTP-CONNECT responses with active probes.