株式会社ハルメクData breach / unauthorized access incident
- Occurred on
- Unconfirmed
- Announced on
- September 11, 2026
- Severity
- SCompromise of deep personal data or usable credentials.
- Scale
- 1 people
- Main impact
- Unauthorized access occurred to the HALMEK up admin panel, and it was disclosed that one employee's ID and password were stolen.
- Information involved
- User / member IDPassword
- Cause / key point
- It is attributed to the theft of one employee's ID and password.
- Industry
- Services & other
- Listing / capital
- Listed company東証グロース 7119(ハルメクホールディングス)
- Last updated
- October 20, 2026
Stock price reaction to the disclosureハルメクホールディングス / 東証グロース 7119
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CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.
Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:
Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction
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Attack method classification: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)
Read the Unauthorized access (method undisclosed) guide and national trends →