Combining Proxy/VPN/TOR Detection

For many users who experience internet censorship or live under digital surveillance, combining a proxy with Tor is a powerful countermeasure. However, this layered approach to online privacy has several vulnerabilities that need to be understood and addressed by those using it.

A combined proxy/VPN/TOR detection (VPN) routes all network traffic to and from a device through it, typically encrypting it along the way. While popular with both privacy-conscious individuals and businesses alike, VPNs are also leveraged by bad actors for malicious purposes such as data theft and website traffic fingerprinting.

Combined Proxy, VPN, and TOR Detection: A Complete Threat Approach

Similarly, Tor is used by many to bypass regional restrictions and access content not available in their location. Tor is also known for its powerful anonymity features, which make it a vital tool for journalists and human rights activists. However, both can be vulnerable to attacks that circumvent their anonymity properties.

One of these attacks, called a Confirmation Attack, involves analyzing Tor exit nodes to determine when a connection is being routed through them. The attacker can then use the leaking connection data to identify a user’s true IP address.

As with proxies, some VPN services leak their original IP addresses through WebRTC – a feature which is used to enable direct peer-to-peer communication between browsers. This information can be used to determine whether a website visitor is using a VPN or Tor. By detecting this, you can prevent the visitor from accessing your website and ensure your website’s security.