RANDAO can be biased.
- Avalanche RANDAO – a construction to minimize RANDAO biasability in the face of large coalitions of validators
- RANDAO beacon exploitability analysis, round 2
- Limiting Last-Revealer Attacks in Beacon Chain Randomness
- https://hackmd.io/@Zergity/UnbiasableRNG#Biasability-of-Distributed-RNGs
- https://quantstamp.com/blog/presenting-quantstamps-ethdenver-beacon-chain-implementation