株式会社ミヤキ Listed by Cicada3301 Ransomware Group

On September 06, 2024, Japanese manufacturing firm 株式会社ミヤキ (Miyaki Corporation) appeared on the leak site of the cicada3301 ransomware group. The listing states that the attackers exfiltrated internal files during a ransomware incident and threaten to publish the company’s research materials on anti-corrosion aluminum, Kashima Coat®, hard anodized aluminum, and related proprietary processes if the company does not make contact.

Reported Details from the Listing

The cicada3301 leak page explicitly names Miyaki Corporation, describes its specialized anodizing technology for aluminum die castings and difficult-to-anodize materials, and claims the group has obtained research documents covering anti-corrosion treatments and industry-leading hard-anodizing standards. The disclosure does not quantify the number of records affected, list specific customer or employee data types, or state the exact volume of material downloaded. It simply warns that the files “will be released soon” if the company fails to respond. No ransom amount is published on the page, and the listing does not indicate whether any data has already been made public.

Why This Matters for You and Your Family

Even when a breach targets a manufacturing company rather than a consumer service, the exposed internal files frequently contain spreadsheets, emails, contracts, or employee records that include personal information. If your name, address, phone number, email, or date of birth appears in any of those documents, the breach creates a permanent record that can surface in future attacks. September 06, 2024 marks the moment this particular dataset entered the criminal ecosystem; from that date forward, anyone whose details were inside those files faces elevated risk of identity theft, phishing, or targeted scams. Families are affected because household members often share the same address, phone, or email domain listed in supplier or HR files.

The Doxxing and Identity-Chain Risk

Ransomware operators rarely stop at the initial leak. Once internal files are obtained, attackers and subsequent buyers map disparate pieces of information—usernames, work emails, personal phone numbers, and project references—into complete identity profiles. A seemingly harmless mention of a Miyaki employee in a research document can link to their child’s gaming handle, family address, or reused password. These chains allow criminals to hijack accounts, impersonate victims, or sell the bundle on multiple underground platforms. Credential leaks of this nature routinely cascade into gaming-account takeovers, because children and adults often reuse the same passwords across work-related services and entertainment platforms.

Cicada3301’s Known Track Record

Public reporting attributes the cicada3301 ransomware group with operations that began appearing in mid-2023. The group is known for targeting manufacturing, technology, and industrial firms, often listing victims on its own Tor site with screenshots or file trees as proof of access. Its typical playbook involves initial access through phishing or exploited remote desktop services, followed by claimed exfiltration of internal shares before encryption. The extortion style combines threats of full data publication with pressure on the victim company to pay to prevent release. While the exact success rate remains unclear, the group has maintained an active leak site for over a year, indicating it continues to obtain and publish stolen corporate data when negotiations fail.

What to do

• Run a DoxxScan to map every link between your handles, emails, phone numbers, and real-world identity, then use the cleanup of Warden to remove what you can.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure of your information is caught in hours rather than months.
• Rotate any password you used at Miyaki or any related supplier portal anywhere else it is reused, and switch to 2FA through an authenticator app instead of SMS.
• Cover the entire household with DoxxScan family protection, which extends to dependents and children’s gaming accounts that often chain back to the same address or parent email.
• Let remediation specialists handle ongoing takedown requests across data-broker sites and leak forums that surface the newly exposed research files.

The Miyaki listing is a reminder that industrial ransomware incidents quickly become personal when names and contact details leave corporate control. Acting promptly limits how far those identity chains can stretch. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that explicitly includes children’s gaming accounts vulnerable to credential-based takeovers.