Diligence is another Consensys firm. It focuses on Smart Contract and Ethereum Security.
In the blockchain space, finding the right set of auditors and security services providers is a challenge: you are building entirely new infrastructure and technology from the ground up, and securing it requires a holistic approach that does more than find bugs in code.
As one of the most experienced teams in the space, ConsenSys Diligence is at the cutting edge of offensive cryptography, blockchain technology, and cryptoeconomic incentive analysis.
For more see: https://diligence.consensys.net/