When a website shows the message “Anonymizing Proxies Detected,” it means the site’s system has identified your connection as being through a proxy, either through IP database lookups, behavioral analysis, or header checks. This is a security measure intended to prevent abuse, fraud, or violations of the website’s terms of service.

Proxies are servers that proxy & VPN risk API your original computer’s IP address, so other computers can’t see what you do online. They also alter network traffic and HTTP headers, making your requests appear to be coming from a real computer. Proxies have a variety of uses including bypassing censorship, circumventing geographic restrictions, and protecting privacy regarding consumption habits.

There are many different types of proxies available, with each offering varying degrees of anonymity and functionality. Some are free, others cost money, and some can leave traces in HTTP request headers that reveal their true nature.

Anonymous Traffic Detection API: Safeguard Against Suspicious Online Activity

The most common way a website can detect proxy use is through IP database lookups. This involves matching the user’s IP with a list of known proxies, VPNs, and TOR connections. This method is effective but can be inaccurate, especially when a proxy changes its name or location.

The most advanced and accurate approach is to analyze behavior patterns that indicate the connection is proxy-based. This includes monitoring for robotic-like behaviors, such as a high frequency of clicks or scrolling. It can also include looking at other behavioral fingerprints, such as comparing the timezone of the IP address to the browser’s timezone.