Tectonic protocol is a fork of Compound protocol. Compound protocol was audited by Trail of Bits and Open Zeppelin (Link).
The smart contracts and DeFi operating model were audited by Particle B’s security team as well as external auditing firm Slowmist and Blocksecteam. The audit reports are available under "Audit Reports" below.
The Tectonic source code is being finalized and will be published when it is available.