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Top Abuses Of Open Web Proxies

ID: 8a626644-381e-5950-85b0-60919b7204f3

STIX ID: report--8a626644-381e-5950-85b0-60919b7204f3

Feed Name: Zscaler Security Research Blog

Threat Score
50/100

Date Published: 2025-04-02

Date Updated: 2026-05-01

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This report analyzes traffic observed on “elite” open web proxies and categorizes the primary abuses—distributed brute-force attacks against services like Yahoo and Rapidshare, large-scale forum/comment spam, pay-to-click fraud, IRC/ICQ masking, proxy discovery/testing, and automated site scraping—illustrating request patterns, sample log snippets, and the high volume of transactions (~250k) used to distribute or mask malicious activity.

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