# Hardening notes Apr 30 2026

- Builder state bloat by smaller deposits
- Client overflows
- Non finality + large state + forks + attestations (capture degradation)
- Out of order actions (verify next slot attestations ) or that network is healthy after
- Re-orgs across epoch boundary with block that build on different parent status (empty -> full reorg, full -> empty reorg)
- Fuzzing
- circuit breaker? list from clients?
- Payload equivocation
- epoch boundary reorg
- bid over uint64 bounds
- bid spamming
- bids from exited / non active / non existed builders
- builder reveal payload but not DA
- payload revealed for wrong bid
- builders on first slot post-gloas
- sub-subnet 1 epoch before gloas