bigchaindb/docs/root/source/bft.md

BigchainDB and Byzantine Fault Tolerance

While BigchainDB is not currently Byzantine fault tolerant (BFT), we plan to offer it as an option. Update Nov 2017: we're actively working on this, the next release or two will likely have support. More details to come in blog form and github issues

Related issue: Issue #293. We anticipate that turning on BFT will cause a dropoff in performance (for a gain in security).

In the meantime, there are practical things that one can do to increase security (e.g. firewalls, key management, and access controls).