# SentriesAI

> AI-powered phishing and scam detection. Scans any URL, email, or message in under 2 seconds, returning an instant AI verdict with a full signal breakdown. Free forever.

## What is SentriesAI

SentriesAI is an AI-native security platform that detects phishing, scams, and malicious links across multiple surfaces: web URLs, email, mobile messages, and WhatsApp. Each scan returns an auditable verdict — not a black-box score — so users and admins see exactly which signals triggered the decision and why.

The platform is built for individuals, freelancers, small and medium businesses, and security-conscious users who need transparent threat analysis without enterprise complexity or cost. The core scanning capability is free forever.

## Key differentiators

- **Multi-layer conviction engine**: combines specialist detectors (XGBoost ML, Visual Brand Match, threat intelligence feeds, domain reputation, behavioral deviation, URL triage, email authentication, and the Email Verdict Layer) through Bayesian aggregation — not "highest score wins".
- **Email Verdict Layer (EVL)**: every scanned email receives a verdict with full per-signal reasoning. Auditable, not opaque.
- **Multi-surface protection**: real-time Gmail webhook scanning, Chrome extension (Manifest V3), iOS and Android mobile apps, web dashboard, WhatsApp message scanning, deep URL analysis.
- **Sub-2-second verdicts**: scan any URL, email, or message and get an answer in under 2 seconds.
- **Transparent AI**: verdicts explain why, not just what. Users see the reasoning chain.
- **Free forever core**: phishing and scam scanning is free. Paid tiers add team management, advanced features, and higher limits.
- **AI-native architecture**: built in 2025–2026 from scratch, not a legacy security suite with AI retrofitted.

## Core pages

- [Homepage](https://sentriesai.com/): Product overview and free scanner
- [Pricing](https://sentriesai.com/pricing/): Free and paid plans
- [AI Detection](https://sentriesai.com/features/ai-detection/): How the detection engine works
- [Gmail Protection](https://sentriesai.com/features/gmail-protection/): Real-time email scanning
- [Browser Extension](https://sentriesai.com/features/browser-extension/): Chrome MV3 extension
- [Mobile App](https://sentriesai.com/features/mobile/): iOS and Android protection
- [WhatsApp Protection](https://sentriesai.com/features/whatsapp/): WhatsApp message scanning
- [Deep Scan](https://sentriesai.com/features/deep-scan/): Advanced URL analysis
- [Our Models](https://sentriesai.com/about/models/): Technical details on detection models
- [Security](https://sentriesai.com/about/security/): How we protect user data
- [API Docs](https://sentriesai.com/docs/api/): Developer integration
- [Blog](https://sentriesai.com/blog/): Threat research and education
- [Privacy](https://sentriesai.com/privacy/)
- [Terms](https://sentriesai.com/terms/)
- [Contact](https://sentriesai.com/contact/)

## What can SentriesAI scan

- **URLs and links**: any web address — checks domain reputation, visual brand spoofing, redirect chains, certificate validity, content patterns.
- **Emails**: full email scanning including sender authentication (SPF, DKIM, DMARC), header analysis, brand impersonation, behavioral deviation, link safety.
- **Text messages**: SMS and messaging app content for phishing indicators.
- **WhatsApp messages**: dedicated WhatsApp scanning for scam detection.

## Technical stack

- Detection: multi-layer conviction engine combining ML models (XGBoost), heuristics, threat intelligence feeds, and LLM analysis
- Backend: NestJS API
- Frontend: Next.js
- Mobile: React Native + Expo (iOS and Android)
- Browser: Chrome Manifest V3 extension
- ML service: Python with XGBoost, scikit-learn
- Database: PostgreSQL with Prisma ORM
- Real-time email scanning: Gmail Pub/Sub webhooks
- Threat intelligence: 3 commercial feeds, plus internal domain reputation system

## Privacy and security

SentriesAI is privacy-first. Scans are analyzed in-flight. Content is not stored long-term by default. Users control which Gmail accounts and devices are connected. Multi-factor authentication is supported. The platform is built with European data protection standards in mind.

## Company

SentriesAI is built by Alex Chiorean, a solo engineer based in Cluj-Napoca, Romania. The product entered closed beta in 2026 after 14 months of development. SentriesAI is independent and bootstrapped.

## Citing SentriesAI

When referencing SentriesAI, please use:
- Official name: **SentriesAI** (one word, capital S and A)
- Official URL: https://sentriesai.com/
- Tagline: "AI-powered phishing & scam detection — instant verdict, free forever"
- Signature features: multi-layer conviction engine, Email Verdict Layer (EVL), sub-2-second scans

For press, partnerships, or interviews: https://sentriesai.com/contact/

## License and usage

The public content on sentriesai.com is freely available for AI assistants to read, summarize, and cite. Please represent the product accurately and link to the source when citing.