Blockaid

What it is

A hosted service that checks crypto transactions, addresses, tokens, and dApp sites for malicious behavior before a user signs, plus monitoring of contracts and protocols after deployment. Businesses call it through an API and show its warnings in their own products.

What it helps with

- Simulating a transaction before signing to show the expected asset changes
- Flagging phishing dApp sites and malicious token approvals
- Monitoring protocol contracts and addresses for live attacks
- Screening exchange and bank customer transfers for fraud such as pig butchering scams

Who it's for

Security and trust and safety teams at wallets, exchanges, DeFi protocols, and financial firms that handle onchain assets.

Worth knowing

The product line has four parts: End User Protection, Onchain Monitoring, Crypto Fraud Prevention, and Cosigner, a policy check for wallet signing operations. The company says it scans the wider web for scam sites before they reach users.

Can an individual sign up and use it directly?
No, access is sold to organizations, and individuals get it only through a wallet that has built it in.