Defraudster

Stop SMS scams before they strike. Defraudster screens texts on-device with smart rules—no data leaves your phone. Stay safe, stay private

Stop Fraudsters in Their Tracks with Defraudster

Defraudster is your personal SMS fraud shield — a powerful, privacy-first message filter that catches phishing, scam, and social engineering texts before they can trick you. Powered by an intelligent, on-device rule engine, Defraudster scores every incoming message for suspicious patterns and automatically filters the dangerous ones, all without sending a single byte of your data off your phone.

HOW IT WORKS

Defraudster integrates directly with iOS SMS filtering. Once enabled, every text from unknown senders is scanned using a weighted scoring system that checks for dozens of fraud indicators — from phishing links and OTP harvesting attempts to fake delivery notices, investment scams, and urgency tactics. Messages that cross the risk threshold are automatically moved to your Junk folder, keeping your inbox clean and safe.

KEY FEATURES

• Smart Rule Engine — Detects 40+ fraud patterns including phishing links, fake prizes, loan scams, SIM swap threats, OTP theft, and social engineering tricks. • On-Device Privacy — All message analysis happens locally on your iPhone. No data is uploaded, no cloud processing, no third-party access. Your messages stay yours. • Risk Scoring — Each message receives a risk score. High-scoring messages are flagged as suspicious; low-scoring messages pass through. You always see why a message was flagged. • Message Analyser — Paste any suspicious text into the built-in analyser to see its risk score, verdict, and a breakdown of every red flag detected. Perfect for checking forwarded messages or texts you're unsure about. • Trusted Sender Allowlist — Add phone numbers you trust to ensure their messages are never filtered. Easily manage your allowlist from within the app. • URL Intelligence — Automatically detects and scores URLs, shortened links, IP-based addresses, and non-HTTPS links that could lead to phishing sites. • Obfuscation Detection — Catches scammer tricks like zero-width characters, (dot) notation, spelled-out URLs, and character substitutions (e.g. $ for S, @ for A) designed to evade basic filters. • Real-Time Protection Status — See at a glance whether your SMS filtering is active and learn how the filtering system works.

WHAT IT DETECTS

Defraudster's rule engine is specifically tuned to catch the most common SMS fraud tactics:

→ Phishing & account takeover (fake login prompts, password resets, KYC bait) → Financial fraud (fake refunds, billing scams, payment urgency) → Prize & lottery scams ("You've won!", gift card bait) → Delivery scams (fake parcel notices, customs fee traps) → Investment fraud (crypto scams, unrealistic returns) → OTP theft (code harvesting, social engineering for passcodes) → SIM swap & identity threats → Suspicious link patterns (shortened URLs, IP addresses, non-HTTPS) → High-pressure tactics (urgency, scarcity, off-platform moves)

EASY SETUP

Download Defraudster Go to Settings → Messages → Unknown & Spam Enable Defraudster as your SMS filter You're protected! BUILT FOR PRIVACY

We believe your messages are your business. Defraudster never reads, stores, or transmits your SMS content. The entire filtering engine runs offline on your device. No accounts, no sign-ups, no tracking.

Protect yourself and your family from SMS fraud. Download Defraudster today.