https://github.com/superbluestar

https://github.com/superbluestar is a GitHub 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 Nisos. The report is dated 2025-03-19.

github profile IT Worker Fraud RESEARCHER POST removed checked 2026-09-30

Listed under Naoyuki Tanaka, Shaorun Zhang.

First seen 2025-03-19 · last seen 2025-03-19

Sources

  • Nisos's report of 19 March 2025, "Likely DPRK Network Backstops on GitHub, Targets Companies Globally", published on its site and as a LinkedIn article whose full text is a PDF, tracks personas posing as Vietnamese, Japanese and Singaporean developers that reuse matured GitHub accounts and portfolio content from older personas, and whose addresses recur with the number 116 and the word dev. The values here are from the report's contact table and its footnotes. The companies the personas list as employers are not carried as indicators. The report ties this persona to the GitHub account superbluestar and to the alexander116 addresses and a Japanese phone number, and assesses that the Karl Chong persona's portfolio is being backstopped with Naoyuki Tanaka's work.
    6068438.fs1.hubspotusercontent-na1.net/hubfs/6068438/dprk-github-employment-fraud.pdf — Nisos · under “Naoyuki Tanaka” · published 2025-03-19 · pulled 2026-09-24
  • Nisos's report of 19 March 2025, "Likely DPRK Network Backstops on GitHub, Targets Companies Globally", published on its site and as a LinkedIn article whose full text is a PDF, tracks personas posing as Vietnamese, Japanese and Singaporean developers that reuse matured GitHub accounts and portfolio content from older personas, and whose addresses recur with the number 116 and the word dev. The values here are from the report's contact table and its footnotes. The companies the personas list as employers are not carried as indicators. The report attributes the superbluestar username jointly to this persona and Naoyuki Tanaka, and shows the persona's linktr.ee photograph to be an advertising image of another person. The repository shaorun-dev116.github.io, held by github.com/kamaalsultan, is where the report shows the persona being built. The report gives the phone number as 323 412 8387 with no country code; 323 is a Los Angeles area code, so it is carried as a United States number.
    6068438.fs1.hubspotusercontent-na1.net/hubfs/6068438/dprk-github-employment-fraud.pdf — Nisos · under “Shaorun Zhang” · published 2025-03-19 · pulled 2026-09-24

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

Related indicators

Same persona record: Naoyuki Tanaka

Other identifiers the reporting files under the same persona; 4 of 16 are shown.

All 16 on the Naoyuki Tanaka page

Same persona record: Shaorun Zhang

Other identifiers the reporting files under the same persona; 4 of 9 are shown.

All 9 on the Shaorun Zhang page

Cited by the same report: 6068438.fs1.hubspotusercontent-na1.net/hubfs/6068438/dprk-github-employment-fraud.pdf

Nisos lists 38 other indicators in this source. 4 are shown, chosen across types.

All 39 indicators from 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.