MIC English newsletter vendor breach leaks subscriber email addresses
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What happened
MIC reported that a third party gained unauthorized access to the mail delivery service of a contractor running its English newsletter. 775 email addresses were leaked, and the service has been suspended.
Who is affected
- Subscribers of the MIC English newsletter
- Orgs outsourcing email delivery to vendors
What to do
If you subscribed, check for MIC's direct email and beware of suspicious messages. If you outsource email delivery, review your vendor's server security.
Why this flag
流出は限定的でカード情報は含まれないが、委託先の脆弱性が悪用された事案で、登録者への注意喚起と委託先管理の確認が必要なため。
Yellow flag: caution, slow down — Conditional updates, investigation or recovery follow-ups, and regulatory deadlines.
Sources
- Primary source：総務省 報道資料 ↗