TrustSig
TrustSig OÜ
Tallinn, Estonia
About
TrustSig is a cybersecurity company based in Tallinn, Estonia working in application security, identity & access, endpoint security.
TrustSig is an Estonian bot protection and fraud prevention company. Its platform detects automated threats such as credential stuffing, scraping, scalping, account takeover, SMS pumping and comment spam. Detection is deterministic and based on hardware-level attestation and traffic signals rather than CAPTCHAs or behavioural learning. The company offers a WordPress plugin, frontend SDKs for web and mobile (iOS, Android, React Native), and a backend verification API. Integration is intended to be non-interactive, so visitors see no challenges. The service is hosted in Germany, is designed to be GDPR-compliant without cookies or personal data collection, and offers a free tier alongside paid and enterprise plans. The founding team includes former NATO CCDCOE exercise managers who worked on the Locked Shields and Crossed Swords cyber exercises.
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TrustSig WordPress Plugin
ViewBot protection
WordPress plugin that protects login, registration, comment, contact and WooCommerce forms from bots using hardware-level signals, with server-side token verification handled automatically.
TrustSig Frontend SDK
Bot protection
Client-side script or SDK that runs hardware fingerprinting checks and issues an encrypted token attached to form and API requests.
TrustSig Backend Verification API
Bot protection
Server-side verification of TrustSig tokens, performed locally with static keys or through the TrustSig edge network, returning an allow or block verdict.
TrustSig Security Tools
Browser security tools
Free browser tools for viewing device fingerprints, checking email addresses for breach exposure and disassembling WebAssembly modules.