choilink227@gmail.com
choilink227@gmail.com is an email address
that 4 published sources report
in connection with IT Worker Fraud activity, which public reporting
attributes to North Korea (DPRK).
It is cited here from SOTAHire, Lazarus Group DPRK IT-Worker Registry (lazarus.group), Chollima Hunter and tayvano (lazarus-bluenoroff-research).
The earliest of those reports is dated 2026-08-04 and the most recent 2026-10-18.
email address IT Worker Fraud CURATED
Listed as choi.link227@gmail.com
Listed under Mauro Liu, Mauro Liu aka Xu Liu, Tyler Knapp.
Sources
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SOTAHire's article reports that Consensys, the company behind MetaMask, confirmed it had unknowingly engaged a contractor under the identity Tyler Knapp through a third-party staffing firm, who worked on MetaMask code from 9 March to April 2026 before the contractor's ties to the DPRK IT-worker network were found. The article ties that contractor to the GitHub account imyugioh, display name Yu-Gi-Oh!, which it traces to account id 54774811 and to the earlier logins raptor1001, ethlocker, burndai and 0xlocker, and it lists the further personas Ryan Choi, Stephen Gooden, Andrian Fadhilla and the new Ryota Suzuki with their accounts and addresses, all transcribed here. The article reports the Ryan Choi LinkedIn account and Calendly link as dead; the Calendly link is carried for the record. The Ryota Suzuki LinkedIn account was live when checked on 24 September 2026. The lazarus.group registry, which this index already holds, files blueraptor1001@gmail.com and choi.link227@gmail.com under Mauro Liu, and Raden Wilford's article, filed under that name, covers the same identity.
www.linkedin.com/pulse/metamask-hired-north-korean-operative-who-had-access-harmony-evnnc/ — SOTAHire -
Entry in the lazarus.group DPRK IT-worker registry, which asserts that these accounts belong to one operator. The registry publishes no methodology, so this is recorded as its claim and not as a finding of this site. Its evidence links and its cross-references to other operators in the same registry are deliberately not reproduced as indicators.
lazarus.group/team/mauro-liu — Lazarus Group DPRK IT-Worker Registry (lazarus.group) -
Found on 24 September 2026 by searching GitHub's commit index for published persona addresses and reading which account GitHub attributes the commits to. GitHub credits a commit to the account that has the signing address registered and verified, which only the holder of the mailbox can do, so an attributed account is one the address's holder controls, whichever repository the commits sit in and whenever the address was added. Counts are of the commits GitHub's search returns, up to 100. GitHub attributes 100 commits signed choi.link227@gmail.com, an address the lazarus.group registry publishes for this persona, to github.com/wpickachu, account id 50459820, created on 9 May 2019, display name It's me!, with 86 public repositories.
github.com/wpickachu — Chollima Hunter -
…github.com/zhChameleon - blueraptor1001@gmail.com: 0xlocker, Burndai, Derek Lee, Raptor, Raptor1001, burndai, ethlocker, unlocker - choi.link227@gmail.com: Ryan Choi - bitbaby888@gmail.com - mauro@blueberry.garden (blueChamel) - pwongexcal@gmail.com (0xchamel) - zhaoa4317@gmail.com…
DPRK IT Workers — tayvano (lazarus-bluenoroff-research)
Find this indicator in the index, or see every email address this site holds under Email addresses in the browse listing.
Related indicators
Same persona record: Mauro Liu
Same persona record: Mauro Liu aka Xu Liu
All 20 on the Mauro Liu aka Xu Liu page
Cited by the same report: www.linkedin.com/pulse/metamask-hired-north-korean-operative-who-had-access-harmony-evnnc/
All 29 indicators from this source
Cited by the same report: lazarus.group/team/mauro-liu
All 24 indicators from this source