Blocksec

Blocksec combines real-time smart-contract security monitoring (Phalcon), KYT analytics and a visual crypto-transaction graph (MetaSleuth). The company was founded in 2021 and operates from Singapore and the United States.

Products The listed products are the MetaSleuth Visual Crypto Tracing API, Phalcon real-time hack prevention with automated blocking, and KYT compliance. The company states that beyond KYT checks it can automatically pause transactions when an attack on the mempool is detected.

Customers and coverage Target customers are crypto protocols, custodians, exchanges, payment gateways and wallets. Geography is described as global.

Plans Access is by SaaS subscription, from Pro plans up to the Enterprise API. Plan prices are not published; request them together with the list of supported chains.

The two products serve different teams: Phalcon is aimed at protocols and gateways that need to react to an attack as it happens, while MetaSleuth supports investigators who need to follow funds visually across addresses.