Reading Elevator Service Listed by sinobi Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On December 2, 2025, the sinobi ransomware group listed Reading Elevator Service on its leak site and claimed to have exfiltrated internal files from the company. The number of people affected remains unknown, and no further details on the scope or confirmation of the listing have been made public. The incident is significant because elevator service providers hold operational records that can include client site access information, maintenance schedules, and internal communications. Any exposure of such material could affect building owners and residents who rely on the company’s systems in Eastern Pennsylvania.

Inside the incident

Public reporting on the event is limited to the December 2, 2025 listing by the sinobi group. The group claims internal files were taken during a ransomware operation. No information has been released on the number of records involved, the exact date of the intrusion, or the method used to gain access. The company has not issued a public statement confirming or denying the claims.

Inside sinobi

Sinobi is a ransomware group that has appeared on leak sites in recent years. Like other actors in this category, it typically combines file encryption on victim systems with the threat of publishing stolen data. The group maintains a public listing page where it names organizations it claims to have targeted. Such listings are presented by the group itself and are not independently verified at the time they appear.

Who is Reading Elevator Service?

Reading Elevator Service was established in 1969 and provides installation, maintenance, and modernization of non-proprietary elevator systems. It operates primarily in Eastern Pennsylvania, serving both residential and commercial properties. The company holds standard industry affiliations and maintains bonding and insurance coverage. Organizations in this sector routinely manage service contracts, building access details, and equipment records that support ongoing safety and operational requirements.

What data was at risk

The only data category named in connection with the listing is internal files exfiltrated during the claimed ransomware attack. No further breakdown of file contents has been disclosed. Organizations of this type commonly store client contact information, service histories, and internal operational documents, but the precise material involved in this case remains unconfirmed.

What's at stake

For individuals and property owners, the main concern is the possible circulation of records that contain building access information or service details. For the organization, the incident adds to the operational burden of investigating the claim, notifying affected parties if required, and reviewing security controls. Both outcomes depend on facts that have not yet been made public.

If your data was in this claimed breach

Individuals can take the following initial steps while more information remains unavailable:

• Review bank and credit card statements for unusual activity.
• Enable multi-factor authentication on accounts tied to any services used with the company.
• Request a copy of any service records held by the provider if you are a current client.
• Run a free exposure scan of your email address against known breach data to check for prior appearances.

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