Stop bots. Not your users. — Invisible bot protection and fraud prevention by TrustSig.

The attacks you're already facing

Bots cost real money. They drain your SMS budget, corrupt your data, and crowd out real customers. TrustSig blocks credential stuffing, OTP pumping, scraping, inventory abuse, and account takeover attempts before they ever reach your backend.

OTP and SMS pumping fraud

Fake signups drain your SMS budget. Bots generate thousands of fake OTP requests, billing you for each one. TrustSig blocks the bot before the OTP is ever sent, using device lineage and telecom routing intelligence.

Credential stuffing

Stolen passwords, tested at scale. Automated scripts try millions of username and password combinations against your login endpoint. TrustSig identifies synthetic timing, hardware inconsistencies, and headless browsers, blocking the attempt without ever challenging a real user.

Inventory and form abuse

Headless browsers clear inventory or submit forms faster than humans can. TrustSig distinguishes real hardware from emulated environments and rack-server traffic, keeping real customers first in line.

Three things your users never see

Zero cookies. Zero personal data harvested. Zero user challenges. TrustSig verifies the request silently using hardware-level signals — rendering behavior, real-time telemetry, and deterministic device attestation. Your visitors experience absolutely nothing.

Not another captcha

Traditional captcha solutions challenge your users. TrustSig challenges the bots. Every TrustSig deployment includes our full deterministic threat detection engine from day one, including hardware attestation and environment fingerprinting that bypass-resistant captcha alternatives like FriendlyCaptcha, hCaptcha, and reCAPTCHA cannot offer at any price tier.

Built by security engineers

The core team behind TrustSig brings a decade of national cyber defence experience to enterprise bot protection. Founders include former NATO CCDCOE exercise managers, architects of Locked Shields and Crossed Swords — the world's largest live-fire cyber exercises — applying the same operational grade to automated fraud prevention.

Two packages. Five minutes.

Drop the client SDK on your frontend. Verify the token on your server. No infrastructure changes, no reverse proxies, no downtime. SDKs available for React, Vue, Svelte, Angular, Next.js, Nuxt, iOS, Android, Flutter, and WordPress, with server libraries for Node, Go, Rust, Python, PHP, Ruby, .NET, and Java.

Zero impact on your site

The risk decision is made at the edge before your backend ever processes the request. Advanced heuristics run asynchronously, completely outside your request path, adding zero milliseconds to your page load. Tokens verify locally with static keys — no network call required.

Honest pricing

Security shouldn't be a luxury. Unlike competitors who lock their best threat intelligence behind enterprise paywalls, every TrustSig deployment — including our generous free tier of 50,000 requests per month — includes the complete deterministic threat engine. Paid plans start at €29 per month for 300,000 requests and three domains.

Protected in 5 minutes. Free forever.

Start free with no credit card required, or reach out to our team for enterprise, compliance, and custom deployments. Built in Estonia. Hosted in Germany. No US data transfer. GDPR Article 25 compliant.