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Web3 Security: Why 99% of Projects Will Get Hacked (And How to Be the Exception)
Coding Guy
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3 min read · 3 days ago
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In 2024, I watched $14 billion get stolen from Web3 projects. Not lost. Stolen.
And the worst part? Almost every single hack was preventable. The developers knew the vulnerability existed. They just didn’t prioritize fixing it.
If you’re building in Web3, this is your survival guide.
Why Smart Contracts Are Easier to Hack Than You Think
Your code runs on a transparent, immutable ledger. Every transaction, every variable, every function call is public.
This creates a fundamental problem: attackers can audit your code before you even launch. They can test attack vectors without consequences. They can examine your logic for edge cases you missed.
Compare this to traditional software. If there’s a vulnerability in AWS, attackers have to find it through fuzzing, reverse engineering, or luck. In smart contracts, they can simply read your source code and mathematically prove an exploit will work.
The most common vulnerabilities aren’t sophisticated:
- Re-entrancy attacks (calling back into your contract before state updates)
- Integer overflow/underflow (math operations exceeding limits)
- Front-running (ordering transactions to profit unfairly)
- Logic errors (incorrect conditional checks)
- Access control failures (missing permission checks) CSD0tFqvECLokhw9aBeRqttKp7M00nsCiuWo5weEz+bIZdRiRvp7aKQ9NQNKlKq5pGOrNYsrOWuXGLqBxdWJB3PWjmk99meurn0KGDucT3JysuwCsAsHjQy1fgdVSkJ5+w510NJWKsn3rkLh3uUQjG20g0xDDmZv0sHzJsT2mE8=
