BlockSec is a blockchain security infrastructure company providing cutting-edge research, reliable security services, and insightful tools. They focus on ensuring blockchain security, including auditing projects in Solidity, Rust, and Go, and have secured over $12 billion in assets. Their products like Phalcon, MetaDock, and MetaSleuth offer solutions for security development, proactive defense, and crypto tracking. The company is known for its expertise in blockchain security, having successfully protected significant digital assets from attacks.