Three Sigma | Web3 Security (@threesigmaxyz) — Twitter Score 84 out of 1000

Three Sigma is a Web3 security firm that specializes in smart contract audits, economic audits, and exploit prevention, co-founded by Afonso Oliveira and Tiago Barbosa. Three Sigma's Twitter Score is 84 out of 1000 (a Good rating) as of September 2026, ranking #9,193 (top 5%) among 486,860 tracked accounts.

Three Sigma was established when three cybersecurity engineers launched the firm, with Hugo Nicolau serving as CEO. The firm reports more than 150 audits completed, over $10 billion in client assets protected, and more than 300 critical and high-severity issues identified across its engagements. Its audit coverage spans EVM-compatible chains as well as Solana, NEAR, Sui, and Aptos, making it one of the broader multi-ecosystem security practices in the space.

Three Sigma counts a wide range of prominent protocols among its clients and partners, including Maple Finance, the Uniswap Foundation, the Arbitrum Foundation, zkSync, Liquity, Abstract, MegaETH, Filecoin, StarkWare, Scroll, Linea, Fuel, Immunefi, and Hypernative. The firm's work spans code security, led by Niccolo Pozzolini, and economic security, led by Pablo Bartol, with business development handled by José Araújo.

Three Sigma has published 1,730 posts on the platform and has been mentioned by 41 accounts a total of 58 times, reflecting its active presence in Web3 security discourse.

Who follows Three Sigma on X?

The accounts that follow Three Sigma include 306 founders, 97 angel investors, 166 influencers and 7 VCs, among them Laura Shin, Hasu, Luca Netz, Georgios Konstantopoulos, Hsaka and Jesse Powell.