Three Sigma - Author - simeon cholakov

Security Researcher

Simeon Cholakov

Latest Articles

Explore our blog and stay up to date with the latest news on web3.

Upgradable Smart Contracts Series: Part 2 - Top Smart Contract Vulnerabilities & Real-World Hacks

Web3 Security

14 min read

Upgradable Smart Contracts Series: Part 2 - Top Smart Contract Vulnerabilities & Real-World Hacks

Learn the biggest risks in upgradeable contracts: uninitialized proxies, storage collisions, & malicious upgrades. Avoid these common pitfalls. read more

by Simeon Cholakov

07.21.25

Upgradeable Smart Contracts Series: Part 1 - Proxy & UUPS Patterns in Solidity with OpenZeppelin + Foundry

Web3 Security

12 min read

Upgradeable Smart Contracts Series: Part 1 - Proxy & UUPS Patterns in Solidity with OpenZeppelin + Foundry

Explore Ethereum upgradeable smart contracts: UUPS, Transparent, Beacon, and Diamond proxy patterns for secure and scalable dApp design. read more

by Simeon Cholakov

07.18.25

Liquid Restaking Tokens (LRT) Deep Dive Series: Part 4 - Future Trends and Tokenomics of LRTs

LRT's

11 min read

Liquid Restaking Tokens (LRT) Deep Dive Series: Part 4 - Future Trends and Tokenomics of LRTs

The future of LRTs is multichain, governance-heavy, & deeply integrated. Discover how tokenomics, adoption, & standards are evolving across the ecosystem. read more

by Simeon Cholakov

07.10.25

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