MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED Listed by avaddon Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
The MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED Listed by avaddon Ransomware Group (reported September 9, 2021) is an unverified claim; the data involved is undisclosed belonging to roughly unknown people. If you have an account with them, your information may now be circulating on the open web and with data brokers. Here’s exactly what happened, how to check if you were affected, and what to do next.
MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED appeared on the leak site operated by the avaddon ransomware group on 9 September 2021. The listing states that internal files were taken during a ransomware incident, though the number of individuals affected and the precise contents of the material remain undisclosed.
The incident is one of many claims made by ransomware operators that year. Public records do not show independent confirmation of the data volume or whether any material was later published.
Breaking down the breach
The only confirmed public detail is the appearance of the company name on the avaddon leak site on the reported date. The group asserted that internal files had been exfiltrated. No information has been released about the date of the intrusion itself, the method of initial access, the volume of data involved, or whether encryption was also deployed against the organisation’s systems.
Because the number of people affected is listed as unknown, it is not possible to determine the scale of any potential exposure from the information currently available.
The group behind it: avaddon
Avaddon operated as a ransomware-as-a-service group between 2020 and 2021. Its members typically gained access through phishing or remote-desktop vulnerabilities, deployed encryption, and then used the threat of data publication to increase pressure on victims. The group maintained a public leak site where it listed organisations that had not paid demanded ransoms.
Avaddon ceased visible operations after law-enforcement actions against its infrastructure in mid-2021. Its listings, including the one for MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED, represent claims made by the group rather than independently verified events.
Who is MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED?
MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED is a corporate entity registered to manage holdings outside its primary jurisdiction. Companies of this type commonly maintain records relating to subsidiaries, financial transactions, contracts, and employee or partner information across multiple jurisdictions.
Because such organisations sit at the centre of corporate structures, any confirmed loss of internal files can affect downstream entities and individuals whose details appear in those records, even when the exact nature of the files is not publicly known.
The information in question
The listing refers only to “internal files exfiltrated in ransomware attack.” No further breakdown of file types, categories, or data fields has been published by the organisation or by the group. It is therefore not possible to state with certainty whether personal data, financial records, or other categories were included.
Organisations structured as overseas holdings typically store documents such as corporate filings, banking details, and correspondence. Without confirmation, however, the presence of any specific category of information cannot be assumed.
Why it matters
Even when the exact contents remain unknown, the publication of a company’s name on a ransomware leak site signals that internal material has left its control. This can create secondary risks, including follow-on targeting of the same organisation or of entities referenced in the files.
For individuals, the main concern is whether personal identifiers or account details appear in any of the exfiltrated material. Until the organisation provides a clearer account of what was taken, those possibilities cannot be ruled out or confirmed.
If your data was in this claimed breach
Individuals who believe their information may have been held by MEGAPOLIS HOLDINGS (OVERSEAS) LIMITED should monitor their financial and email accounts for unusual activity and consider changing passwords for any services linked to the organisation. Enabling multi-factor authentication on important accounts provides an additional layer of protection while the scope of the incident remains unclear.
Readers can also run a free exposure scan of their email address against known breach data to check for appearances in previously published datasets. Any confirmed exposure should be treated according to the sensitivity of the data involved.
AICompiled with AI assistance from public sources and published under our editorial standards.
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Publicly posted by avaddon — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.