Free, open-source and self-hosted CAPTCHA alternative to reCAPTCHA. Privacy-first and powered by proof-of-work and instrumentation challenges.
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Jun 6, 2026 - JavaScript
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anti-abuse
Here are 18 public repositories matching this topic...
Independent, privacy-first, self-hostable PoW CAPTCHA service made in EU
security protection captcha self-hosted spam-protection anti-bot proof-of-work captcha-alternative ddos-protection anti-abuse invisible-captcha
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Jun 6, 2026 - Go
Refund Swatter Lite significantly reduces malicious refund risks by processing Apple's CONSUMPTION_REQUEST notifications and sending detailed consumption data back to Apple within the required 12-hour window, enabling Apple to make informed decisions on refund requests.
security ios serverless saas refund app-store iap fraud-prevention in-app-purchase chargeback anti-abuse subscription-management deno consumption-data supabase app-store-server-api app-store-server-notifications open-source-saas consumption-request refund-prevention
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Jan 3, 2026 - TypeScript
New/Updated. An open source list of ASNs known to belong to cloud, managed hosting, and colo facilities.
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Apr 15, 2020
🔥 Simple, fast, secure, and abuse-aware open-source mail forwarding stack. Trusted by Phrack, THC, Team-Teso, EuroCompton, AntiSec and others!
nodejs open-source security privacy postfix self-hosted mta mail-server unlicense email-forwarding anti-abuse mail-forwarding email-alias haltman no-open-core
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Apr 14, 2026 - Perl
A high-performance C++ implementation of the Cap.js solver.
cpp captcha cap anti-bot antispam defense hashcash proof-of-work turing-test anti-abuse capjs anti-scraper
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Mar 3, 2026 - C++
Self-hosted Discord.js referral bot with personal invite links, weekly token quotas, smart confirmations, rewards and anti-abuse.
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Dec 9, 2025 - JavaScript
Rust uMod plugin that prevents restraint abuse by enforcing maximum handcuff duration and safely teleporting victims to Outpost or Bandit Camp.
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Feb 20, 2026 - C#
AbuseIPDB API v2 JavaScript client
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Jul 18, 2023 - JavaScript
P10 IRC security service in Perl for ircu-style uplinks: DNSBL checks, flood protection, G-lines, channel enforcement, and operator tooling (info/status/whois/seen).
bot irc perl whois irc-services dnsbl network-security anti-abuse ircu flood-protection abuse-prevention gline irc-security-p10 chat-security
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May 17, 2026 - Perl
Deobfuscated analysis of LinkedIn's in-browser extension fingerprinting (chunk.585) — 6,236 Chrome extensions actively probed via chrome-extension:// fetches plus a passive DOM scan, all sent to LinkedIn's tracking pipeline as AedEvent / SpectroscopyEvent. (forgive the overzealous branch name)
privacy linkedin reverse-engineering deobfuscation fingerprinting chrome-extensions anti-abuse security-research web-tracking browser-extensions
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May 2, 2026 - Python
Behavior-based web scraping & abuse detection pipeline using sessionization and explainable rules.
apache-spark athena aws-s3 pyspark data-engineering feature-engineering data-pipeline bot-detection anti-abuse sessionization log-processing
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Apr 14, 2026 - Python
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Sep 17, 2023
Anti Cheat/Anti Abuse tool for Rust server, using WebRCON
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Oct 1, 2021 - Nim
Mock useful-action scoring for UGT ecosystem activity mining narratives.
marketplace loyalty developer-tools web3 game-dev quest-system anti-abuse ugt web3-games contribution-mining binergy activity-mining wallet-identity
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Jun 3, 2026 - JavaScript
Experimental toolkit for testing BTX MatMul Service Challenges as API access control for AI agents.
express typescript api-gateway access-control proof-of-work post-quantum ai-agents anti-abuse btx fastapi
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Jun 5, 2026 - TypeScript
EmailRep is an email address reputation and threat-intelligence API operated by Sublime Security, Inc. It crawls and enriches data across social media profiles, professional networking sites, dark-web credential leaks, data breaches, phishing kits, phishing emails, spam lists, open mail relays, spam traps, domain age and reputation, and email-deli…
security email phishing fraud-prevention deliverability threat-intelligence anti-abuse public-apis email-reputation risk-scoring
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Jun 5, 2026
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