Kumavis is a JavaScript security developer and co-founder of MetaMask, focused on object-capability security, peer-to-peer systems, and language security tooling. Kumavis's Twitter Score is 138 out of 1000 (an Excellent rating) as of October 2026, ranking #4,347 (top 1%) among 493,263 tracked accounts.
Kumavis co-founded MetaMask, the widely used Ethereum browser wallet, and remains active in its broader security ecosystem through work on LavaMoat, a suite of JavaScript supply-chain security tools, and Endo, an object-capability runtime for JavaScript. Kumavis is also affiliated with Consensys, the blockchain software company behind MetaMask. A lawsuit reported by WIRED alleged that Kumavis swindled an ownership stake in MetaMask, a claim co-founder Dan Finlay publicly dismissed as baseless, and the matter remains a contested allegation. Separately, on April 25, 2024, Consensys filed a preemptive lawsuit against the SEC seeking relief tied to the SEC's treatment of ether transactions, MetaMask, and staking services; on June 28, 2024, the SEC charged Consensys with unregistered offer and sale of securities through MetaMask Staking and operating as an unregistered broker through MetaMask Staking and MetaMask Swaps.
Kumavis has published 10,855 posts on the platform and has 8,744 followers as of October 2026. Kumavis has been mentioned by 81 accounts, with 125 total mentions.
Who follows Kumavis on X?
The accounts that follow Kumavis include 564 founders, 151 angel investors, 91 influencers and 5 VCs. Among them are Chris Dixon, jesse.base.eth, Toly, Erik Voorhees, Laura Shin and Stani.