Chollima Hunter

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https://keybase.io/ryuheimat

https://keybase.io/ryuheimat is a Keybase account that one published source reports in connection with IT Worker Fraud activity, which public reporting attributes to North Korea (DPRK). It is cited here from Chollima Hunter.

The reporting files it under the persona Ryuhei Matsuda, alongside 17 other identifiers attributed to the same identity. The persona page shows them together with any accounts, photographs and CV recorded under that name. A persona name is the one an account presented under, and may belong to an uninvolved person whose identity was taken.

keybase account IT Worker Fraud CURATED live checked 2026-11-08

First seen unknown · last seen unknown

Source

  • Found on 17 September 2026 by asking Keybase whether an account exists under ryuheimat, one of the logins the registry already holds for this operator, and read from the profile cited. The account states a registration date of 17 May 2022 and no display name but the handle itself. The handle is what links this account to the rest; nothing here establishes that one person holds both, and a display name on a profile is a name the account presents, not an identification.
    keybase.io/ryuheimat — Chollima Hunter · under “Ryuhei Matsuda” · pulled 2026-09-17

Find this indicator in the index, or see every Keybase account this site holds under Keybase accounts in the browse listing.

Related indicators

Same persona record: Ryuhei Matsuda

Other identifiers the reporting files under the same persona; 8 of 17 are shown.

All 17 on the Ryuhei Matsuda page

Cited by the same report: keybase.io/ryuheimat

Chollima Hunter lists 1 other indicator in this source.

Disclaimer An entry here is not proof of DPRK affiliation or wrongdoing. A listed name, account or address may belong to an uninvolved person, so each entry is a lead to verify independently. What inclusion means. See the sourcing methodology.