@acgueler
The 4 vulnerabilities behind most DeFi hacks 👇
- Lack of input validation (≈32% of incidents, ~$1B lost)
- Reentrancy (18% of hacks, still a classic)
- Faulty proof verification in bridges (rare, but $912M lost)
- Logic/math errors (costly in 2023: 62% of losses)
Billions lost. Most preventable.
That’s why I’m focused on smart contract security.
Source: Halborn, Top 100 DeFi Hacks Report 2025
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