{"id":1191,"date":"2025-04-15T12:54:33","date_gmt":"2025-04-15T10:54:33","guid":{"rendered":"https:\/\/avydos.com\/rapid-proxy-rotation-explained\/"},"modified":"2026-03-25T15:21:14","modified_gmt":"2026-03-25T14:21:14","slug":"rapid-proxy-rotation-explained","status":"publish","type":"post","link":"https:\/\/blog.kybervandals.com\/rapid-proxy-rotation-explained\/","title":{"rendered":"Rapid Proxy Rotation explained"},"content":{"rendered":"

\"Rapid<\/p>\n

TL;DR<\/strong><\/h2>\n\n

Rapid Proxy Rotation is an effective DDoS attack technique that bypasses traditional rate-based detection and mitigation mechanisms.<\/strong><\/p><\/blockquote>\n

The use of Proxies in Layer-7-DDoS is evolving, as we wrote in 2023<\/a> and 2024<\/a> already.<\/p>\n

In this article, we present a technique that allows attackers to bypass detection thresholds and rate limiting by leveraging proxy infrastructure. The technique is referred to as Rapid Proxy Rotation<\/strong>. It involves switching the source IP address for every individual request, significantly complicating detection.<\/p>\n

A simple calculation illustrates the impact: suppose an IoT botnet consists of 1,000 IPs, each capable of generating 100 requests per second (RPS). This results in 100,000 RPS in total\u2014but with each IP pushing 100 RPS, the activity is noisy and easily flagged.<\/p>\n

Now consider the use of a large-scale proxy service, such as one described here<\/a>, which is based on residential proxies. By proxying traffic through 10,000 rotating IPs instead of 1,000, the same 100,000 RPS workload is distributed more evenly. Each IP now only emits 10 RPS\u2014reducing the signal per IP by 90%<\/strong> and making the attack much harder to detect. Scaling up the proxy pool further would reduce the per-IP RPS even more.<\/p>\n

The proxy services we tested\u2014particularly paid providers\u2014support assigning a unique IP per request, which enables true Rapid Proxy Rotation. When combined with other techniques such as randomized User-Agent-Headers and multi-target or multi-vector strategies, this results in a morphing attack pattern that is extremely difficult to defend against from the defender’s perspective.<\/p>\n

This method evades rate-based detection mechanisms and, as an additional advantage for attackers, effectively bypasses GeoIP-based blocking strategies as well. <\/p>\n

The following two visualizations support the practical viability of this method:<\/p>\n

    \n
  1. The first graph displays the „Most Active IPs“ during an active attack, indirectly confirming that most IPs operate at a low and stealthy rate (1\u20132 RPS).<\/li>\n
  2. The second graph illustrates the ISPs involved in an attack that was proxied via German infrastructure.<\/li>\n<\/ol>\n\n
    \"Rapid
    RPS pro IP, in Rapid Proxy Rotation<\/span><\/figcaption><\/figure>\n\n
    \"Rapid
    German ISPs, during a Proxy-Attack<\/span><\/figcaption><\/figure>\n\n

    <\/h3>\n

    References<\/h3>\n\n