Detecting Proxies and VPN's with Latency Measurements

Posted on June 07, 2021 in Security • Tagged with proxy-detection, anti-scraping • 10 min read

VPN's and Proxy Servers can be detected by comparing latencies measured with JavaScript in the browser with the corresponding latency of the TCP/IP handshake on the server.


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Detecting Datacenter and Residential Proxies

Posted on April 24, 2021 in Security • Tagged with Proxy Detection • 7 min read

Detecting proxys can't be that hard? Can it?


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