A PEEK INTO REDDIT'S ANTI-SPAM INTERNALS

Summary from the TLDR InfoSec newsletter

A 2021 Reddit glitch exposed internal removal reasons in Relay notifications. Screenshots reveal domain blocks, account bans, shadowbans, Spamurai rules, and URL inspection. Spamurai logged account age, karma, reports, ISP, email domain, browser details, language headers, TLS fingerprints, and referrers. This reproduced a Perspective API score and showed that appending two letters changed a spam score from 86% to 1%. Reddit also followed redirected URLs, scanned page content, and matched a Google Analytics ID tied to a spam ring.