G-YET security incident history
Hacking, data breaches and other security incidents involving G-YET, with related coverage.
G-YET confirms administrative ID leak in October Blastmail incident
Impact: Reader IDs and distribution IDs that cannot identify individuals were confirmed leaked. Names, email addresses, dates of birth, gender and regional information were not exfiltrated. The number of leaked records was not disclosed.
On 13 November, G-YET announced the final findings of its investigation into the unauthorised access to Blastmail disclosed in October 2026. The investigation confirmed that administrative identifiers that cannot identify individuals, including reader IDs and distribution IDs associated with the Mac House email newsletter, had been exfiltrated. Names, email addresses, dates of birth, gender and regional information were not exfiltrated, and the number of leaked records was not disclosed.
Read on 日本経済新聞 ↗