Emem Etim

Software Engineer | Web3 Security Audit/Researcher | Physicist

[Emem Etim @codeboxz]

I just want to be one of the best Software Engineers in the World.

[Emem Etim @codeboxz]

Yeay, I have received reputation points and increased my rating on the leaderboard on @HackenProof https://t.co/5e3EeF7Nju #hackenproofed #bugbounty

[Emem Etim @codeboxz]

Yeay, I have received reputation points and increased my rating on the leaderboard on @HackenProof https://t.co/5e3EeF7Nju #hackenproofed #bugbounty

[Emem Etim @codeboxz]

I'm building in the Solana Frontier Hackathon, powered by @Colosseum!

https://t.co/qUX4TeezGC

[Emem Etim @codeboxz]

The big city sleeps, but the code never does. Neither do the crooks.

[Emem Etim @codeboxz]

I'm excited to announce I've just completed the Updraft Smart Contract Security course 🎉

A 24hrs course to learn about:
- Advanced smart contract security security
- Manual review
- Invariant and Fuzz testing

With 6 hands-on auditing sessions! Check it out 👇 @CyfrinUpdraft

[Emem Etim @codeboxz]

@TardisSeeker @solanamobile Congratulations

[Emem Etim @codeboxz]

Most major failures weren’t Solidity bugs.

They were:

Privilege failures

Operational failures

Dependency failures

Governance failures

If your threat model ends at the smart contract,
you haven’t passed the Rekt Test.
#Web3Security #SmartContractAudit #DeFi

[Emem Etim @codeboxz]

Most teams think passing an audit means they’re safe.

It doesn’t.

Here’s the “Rekt Test” I use to evaluate if a protocol is actually resilient. 🧵👇

[Emem Etim @codeboxz]

7️⃣ Are key invariants defined and tested on every commit?
8️⃣ Is key management multi-party?
9️⃣ Have you undergone external audits?
Automation ≠ assurance.

[Emem Etim @codeboxz]

“If a technological feat is possible, man will do it. Almost as if it’s wired into the core of our being.”

-Motoko Kusanagi, Ghost in the Shell

[Emem Etim @codeboxz]

ABI (Application Binary Interface) encoding in Solidity, explaining its role in concatenating strings and encoding data into binary. It provides insights into the process of compressing binary data and techniques for multiple data encoding.

[Emem Etim @codeboxz]

I just passed the Certification: Blockchain Basics exam on Cyfrin Updraft! https://t.co/vDJ4VJ3KKa

[Emem Etim @codeboxz]

I did it!

I've completed the Solidity fundamentals course 🎉

5 hours of resources to learn:
- Solidity smart contract development
- Blockchain oracles
- Smart contract testing and security

Completely for free. Check it out 👇 https://t.co/Gtrbj4kwck

[Emem Etim @codeboxz]

I did it!

I've completed the Solidity fundamentals course 🎉

5 hours of resources to learn:
- Solidity smart contract development
- Blockchain oracles
- Smart contract testing and security

Completely for free. Check it out 👇 https://t.co/Gtrbj4kwck

[Emem Etim @codeboxz]

It is not the beauty of a building you should look at; it’s the construction of the foundation that will stand the test of time.

-David Allan Coe

[Emem Etim @codeboxz]

“Two roads diverged in a wood and I — I took the one less travelled by, and that has made all the difference”

– Robert Frost

[Emem Etim @codeboxz]

Reentrancy isn’t a pattern bug.
It’s an invariant violation problem.
If your protocol is only safe when calls happen in the “right order,”
it’s already vulnerable.

#Web3Security #SmartContractAudit #ExploitAnalysis #Solidity #Rust #Solana

[Emem Etim @codeboxz]

Reentrancy is still exploited in 2026.
Not because engineers forgot guards — but because they made unsafe state assumptions. 🧵👇

[Emem Etim @codeboxz]

Even with guards, protocols break when:
• Accounting spans multiple contracts
• Callbacks re-enter related state, not the same function
• Invariants aren’t defined globally
The guard passes. The system fails.