L1 security is about consensus and economic guarantees. L2 security is about bridges, fraud/validity assumptions, sequencing, and cross-domain messaging. We audit the truth assumptions and the escape hatches.
L1 consensus and validator model
L2 sequencing and ordering assumptions
Bridge and cross-domain message verification
Upgrade keys and governance control-plane
Proof/finality assumptions (fraud/validity where relevant)
Operational security and failure recovery
list every “we assume…” explicitly
messages, proofs, and binding logic
upgrades, governance, emergency actions
reorg/replay/censorship-like tests
impact framed as ecosystem-wide risk
High-impact assumptions that can fail in production
Concrete scenarios that break safety or funds integrity
Fix direction focused on binding/proofs/control-plane
Retest confirmation
Frequently Asked Questions
L1 audits focus on consensus security, network stability, and base-layer economic incentives. L2 audits focus on fraud/validity proofs, bridge security, sequencer assumptions, and state derivation correctness.L1 can't fail at all. L2 can't fail and must prove L1 trust assumptions hold.
If consensus is weak, the chain can be halted, reorganized, or double-spent. Economic attacks become possible. Validator cartels can extract value or censor transactions. Weak consensus = systemic risk.
Fraud proofs (Optimistic Rollups): Anyone can challenge invalid state transitions. We test whether challenges actually work and whether challenge windows are exploitable. Validity proofs (ZK Rollups): Cryptographic proofs guarantee correctness. We verify proof generation, verification logic, and circuit soundness.Both must be bulletproof—L2 security depends on them.
We review deposit/withdrawal flows, message passing, finality assumptions, and sequencer trust. Most L2 exploits happen at the bridge layer—weak withdrawal proofs or relayer compromise.
We verify that upgrade controls can't be abused to steal funds or bypass security. Multi-sig thresholds, timelocks, and governance voting must be configured correctly—misconfigurations have led to protocol capture.
It proves the network's security model actually works. Investors want confidence that consensus won't break, bridges won't drain, and upgrades won't rug. Audits provide that evidence.
A blockchain security audit firm with the goal of making the Web3 space more secure through innovative and effective solutions.
