TOR detection for cyber threats network is a privacy-focused internet communication system that is used to conceal the source of web browsing, messaging, and other applications. However, this anonymity can also be leveraged by malicious actors for cyberattacks that are difficult to attribute to a specific individual or organization.

Threat actors can spoof their locations when using the TOR network, making it more challenging for security operations teams to detect and investigate attacks. Detecting these attacks requires an understanding of the threat landscape and how to detect TOR activity in your network. This article will focus on a variety of tools, techniques and methodologies for detecting TOR-based attacks.

Detecting TOR for cyber threats

As a result of its design, the Tor network obfuscates an attacker’s identity by creating an encrypted connection from your device to a series of volunteer nodes and bridges before reaching the final destination. The last node, called an exit node, can see your IP address and the site you are visiting, but cannot connect the dots to identify your true originator. This makes snooping on Tor users extremely dangerous.

To reduce the risk of attacks exploiting the TOR network, organizations should review their internal thresholds and resource availability to determine an appropriate mitigation strategy. The most restrictive approach is to block all traffic to and from public Tor entry and exit nodes. A more moderate approach is to carefully monitor and analyze network traffic destined for Tor exit nodes revealed in PCAP, netflow, web server, or other logs.