Individual skill
contracts-bridge-exploit
Cross-chain bridge attack — message-validation bypass (Wormhole class), validator key compromise (Ronin / Harmony class), reentrancy on token-bridge claim, Merkle-proof forgery on optimistic bridges, signature replay across chains. Bridges have lost >$2B; understand why.
packages/decepticon/decepticon/skills/standard/contracts/bridge-exploit/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
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- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 8, 2026
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Repository context
- Repository stars (not skill ratings)
- 6,566
- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent Repository topic
- ai Repository topic
- cybersecurity Repository topic
- hacking Repository topic
- langchain Repository topic
- langgraph Repository topic
- llm Repository topic
- generative-ai Repository topic
- pentesting Repository topic
- pentest Repository topic
- defi,-bridge,-cross-chain,-validator Declared skill tag
- engineering Derived category
Files and excerpt
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Read excerpt
# Cross-Chain Bridge Attack
Bridges hold large pooled assets and execute messages from a separate trust layer. Architecturally fragile.
## Bridge taxonomy
| Type | Trust model | Past exploits |
|---|---|---|
| **Lock-and-mint** | Trusted validators sign mint events | Wormhole ($325M), Ronin ($600M), Harmony ($100M) |
| **Burn-and-redeem** | Same | Multichain/Anyswap ($126M) |
| **Optimistic** | Fraud proof window | Nomad ($190M) |
| **Light-client / zk** | Cryptographic | (Fewer hacks, but newer) |
| **Liquidity-network (Hop, Connext)** | Routers + relayers | Smaller individual exploits |
