TrustCaptcha
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One CAPTCHA against every kind of attack

Spam, bots, scrapers, credential stuffing, AI agents — TrustCaptcha layers four independent defenses into a single invisible check. More protection than any single-method CAPTCHA, with zero friction for the visitors you actually want.

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Multi-threat protection

Built to stop more than just bots

Most CAPTCHAs are built for one narrow problem. TrustCaptcha defends against the full range of automated abuse that targets modern websites — all from a single integration.

Form & comment spam

Bots mass-submit contact forms, comments, and reviews. TrustCaptcha filters them before they reach your inbox or database.

Automated bot attacks

Scripted bots hammer logins, checkouts, and APIs. Adaptive Proof-of-Work makes every request progressively expensive.

Credential stuffing

Stolen username/password lists tested at scale against your login. Risk scoring flags the automation behind it.

Content & price scraping

Crawlers harvest your data, prices, and content. Many can't solve the challenge at all and never get through.

Fake sign-ups & accounts

Throwaway and automated registrations that pollute your user base. Stopped before they ever create an account.

AI-powered bots

Modern AI agents mimic human behavior — but can't fake the underlying signals or skip the Proof-of-Work.

Defense in depth

Four layers of security. One invisible CAPTCHA.

Every request passes through four independent security mechanisms. Each one is effective on its own — together they make attacks economically pointless while real users sail through unnoticed.

1

Adaptive Proof-of-Work

A cryptographic challenge that scales automatically with the threat level and request frequency.

Mass attacks · brute force · scrapers Learn more →
2

Intelligent Bot Scoring

Real-time analysis of behavioral and technical signals produces a precise bot risk score per request.

Bots · automation · AI agents Learn more →
3

Built-in Honeypot

Multiple invisible trap fields catch spam bots silently — zero setup, zero impact on real users.

Form spam · simple bots Learn more →
4

Configurable Security Rules

Geoblocking, IP allow/block lists, bypass keys, and adjustable sensitivity put you in full control.

Targeted abuse · unwanted regions Learn more →

Each layer works independently — so even if an attacker defeats one, the others still hold. That redundancy is exactly what single-method CAPTCHAs lack.

Why TrustCaptcha

More security than any single-method CAPTCHA

Other CAPTCHAs rely on a single mechanism. TrustCaptcha combines all four — so there's no single point of failure, and every type of attack meets a defense built to stop it.

Security layerTrustCaptchaEU Proof-of-Work
CAPTCHAs		US risk
CAPTCHAs		Puzzle
CAPTCHAs
Adaptive Proof-of-Work✓✓––
Bot detection & risk scoring✓–✓–
Built-in honeypot✓–––
Custom security rules✓–~–
Independent layers of defense4111

✓ included · ~ limited · – not available. Comparison reflects typical feature sets across CAPTCHA categories.

Frequently Asked Questions

Questions about the TrustCaptcha security concept

If you don't find what you need here, contact us and we'll help.

What types of attacks does TrustCaptcha stop?
TrustCaptcha is built for the full range of automated abuse: form and comment spam, automated bot attacks, credential stuffing, content and price scraping, fake sign-ups, and modern AI-powered bots. Four independent layers — adaptive Proof-of-Work, bot scoring, a built-in honeypot, and custom security rules — work together so each threat meets a defense designed to stop it.
How is this more secure than a Proof-of-Work-only CAPTCHA?
Proof-of-Work slows bots down but can't tell them apart from humans. TrustCaptcha adds real-time bot scoring, a built-in honeypot, and configurable security rules on top of adaptive Proof-of-Work. That means four independent mechanisms instead of one — far more coverage and no single point of failure.
What happens if attackers get past one layer?
Each layer works independently. If a sophisticated attacker defeats one mechanism, the others still apply — Proof-of-Work still costs them compute, bot scoring still flags the automation, the honeypot still catches form spam, and your security rules still apply. This defense-in-depth design is what makes the protection so resilient.
Do the four security layers slow down real users?
No. Verification runs invisibly in the background and usually finishes before a user submits the form. The challenge scales with the threat level, so legitimate visitors pass almost instantly while only suspicious traffic faces a meaningful cost.
Does the honeypot require any setup?
No. Multiple invisible honeypots are built into the CAPTCHA by default. They require zero configuration, stay completely invisible to your visitors, and silently filter out spam bots before they reach your backend.
Can I adjust how strict the protection is?
Yes. Configurable security rules let you tune sensitivity and Proof-of-Work difficulty, create IP allow/block lists, enable geoblocking, and issue bypass keys for trusted contexts. The defaults are optimized for typical traffic, so you only adjust what's unique to your setup.
Does TrustCaptcha stop AI-powered bots?
Yes. Modern AI agents can imitate human behavior, but they can't fake the underlying signal patterns and they still have to solve the cryptographic Proof-of-Work. Multiple independent signals flag AI-driven automation even when it imitates real users convincingly.

Trusted by companies, organisations and governments.

Reference, Informations Technik Zentrum Bund logo
Reference, Manner logo
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Reference, Schott logo
Reference, ItsMyData logo
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