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Updated Fediverse (markdown)

Namhyeon Go 2024-03-27 13:46:13 +09:00
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Fediverse.md

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# Fediverse
This document covers how to block spam using Caterpillar in web applications using the federation based on the ActivityPub protocol (referred to as Fediverse), such as Mastodon, Misskey, Pleroma.
## Spam filtering strategy (Fediverse only)
## Spam filtering strategies
* [K-Anonymity](https://en.wikipedia.org/wiki/K-anonymity) test - Estimating whether the characters has been arranged by humans. (use [Have I Been Pwned](https://haveibeenpwned.com/Passwords))
* Not CAPTCHA - Image spam containing characters that look very similar to [CAPTCHA](https://en.wikipedia.org/wiki/CAPTCHA). (use [TrueCaptcha](https://truecaptcha.org/))
* VowelRatio10 - In characters arranged by humans, there is a high frequency of [vowels](https://en.wikipedia.org/wiki/Vowel) (aeiou) and [semivowels](https://en.wikipedia.org/wiki/Semivowel) (wy) and vowel-ending patterns included in strings that are 10 characters.