https://www.revnomix.com Listed by tengu Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On December 8, 2025, the ransomware group tengu listed Revnomix on its leak site. The listing states that internal files were exfiltrated during a ransomware attack on the Indian company. No figure has been released for the number of individuals whose data may be involved, and the precise contents of the files remain undisclosed. The incident matters because Revnomix supplies data analytics and revenue-management tools to hotels. Any exposure of operational records from such a provider can affect both the hotels it serves and the guests whose booking or performance patterns are reflected in those records.

Breaking down the breach

The only confirmed public detail is the December 8, 2025 listing by tengu. The entry asserts that internal files were taken, but provides no count of records, no description of file categories, and no timeline for the intrusion itself. Whether the files were later published or used in further demands is not stated in available information.

Inside tengu

Tengu is a ransomware operator that follows the common pattern of encrypting victim systems and removing data before making demands. The group maintains a leak site where it lists organisations it claims to have targeted, using the listings to increase pressure for payment. Public reporting on the group has documented similar listings against companies in multiple sectors, though each claim requires independent verification.

Who is Revnomix?

Revnomix is an Indian firm that provides data analytics and revenue-management services to hotels. It was founded to help hospitality businesses improve performance through data-driven tools. Organisations of this type routinely process booking patterns, occupancy rates, pricing histories and operational metrics supplied by client properties.

What was likely exposed

The listing refers only to “internal files exfiltrated in ransomware attack.” No further breakdown of data categories has been released. Companies in the hospitality-analytics sector commonly hold records that include hotel performance data, client account details and, in some cases, aggregated or individual guest information. The exact composition of the files allegedly taken from Revnomix is unconfirmed.

The real-world impact

For individuals, the primary concern is whether any personal identifiers or booking histories appear in the exfiltrated material; without confirmation, the scale of that risk cannot be measured. For the hotels that use Revnomix services, exposure of internal analytics could reveal commercially sensitive pricing and occupancy information. The organisation itself faces potential operational disruption and the cost of investigating and containing the incident.

Were you affected?

Revnomix has not published a notification process or a list of affected parties. Individuals who have stayed at hotels that use the company’s services can check whether their email address appears in known breach datasets through a free exposure scan. Anyone concerned about possible misuse of personal information should monitor account statements and consider placing fraud alerts with credit agencies as a standard precaution.

AICompiled with AI assistance from public sources and published under our editorial standards.