kru | Umbra (@kru_tweets) — Twitter Score 44 out of 1000

Kru is a pseudonymous builder who co-founded Umbra, an EVM stealth-address privacy payments protocol. Kru's Twitter Score is 44 out of 1000 as of October 2026, ranking #21,133 (top 5%) among 493,668 tracked accounts.

Kru co-founded Umbra, also active as Umbra Protocol, a stealth-address system built for EVM-compatible networks. The protocol works by letting a sender route funds to a fresh address that only the sender and intended receiver can associate with that receiver, without relying on zero-knowledge proofs or mixing. Instead, it is grounded in standard elliptic curve cryptography. A paper published in 2023 described Umbra as the most widely used stealth-address implementation on Ethereum and examined its behavior across Ethereum mainnet, Polygon, Arbitrum, and Optimism.

Kru that same 2023 analysis surfaced notable privacy limitations: researchers identified deanonymization heuristics that could link the real recipient in 48.5% of Umbra transactions on Ethereum mainnet, 65.7% on Arbitrum, 52.6% on Optimism, and 25.8% on Polygon, and the paper proposed countermeasures to address those weaknesses. Kru has 3,819 followers as of October 2026 and has published 4,886 posts. Kru has been mentioned by 22 accounts, with 43 total mentions.

Who follows Kru on X?

The accounts that follow Kru include 142 founders, 42 angel investors and 80 influencers. Among them are Solana, Jon Wu, MoonPay, DEGEN NEWS, Zmanian and Agentyoda.