OnSight Listed by sinobi Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

OnSight, a UK-based company providing equipment rental, post-production, and technical services to the film and broadcast industries, was listed on January 21, 2026 by the sinobi ransomware group. The listing states that internal files were exfiltrated during a ransomware attack. The number of individuals whose information may be involved remains unknown, and no further confirmation of the incident has been made public. The practical stakes are straightforward: production facilities hold operational records, client correspondence, and technical data that can affect ongoing projects and business relationships if released. Individuals connected to the company through contracts or employment have no Reported Details yet on whether their information appears in the claimed material.

Breaking down the breach

Public reporting on the incident is limited to the January 21, 2026 listing by the sinobi group. The entry asserts that internal files were taken in a ransomware operation. No independent confirmation of the attack timeline, the volume of data, or the method of access has been released. The number of people potentially affected is stated as unknown.

Who is sinobi?

Sinobi is a ransomware group that has appeared in multiple public listings over recent years. Such groups typically gain initial access through phishing, credential compromise, or unpatched systems, then exfiltrate data before deploying encryption. They commonly publish victim names on dedicated leak sites to pressure organisations into payment. In this case the group claims OnSight as a victim; that claim has not been independently verified beyond the listing itself.

Who is OnSight?

OnSight operates as a production facilities provider serving the film and broadcast sectors. Its services include camera and equipment rental, editing systems, digital lab work, and stereoscopic 3D post-production, with facilities at Shepperton Studios and in Soho, London. Companies in this sector routinely manage project files, client contracts, technical specifications, and scheduling data. A breach affecting such an organisation can therefore touch both commercial operations and the personal or professional details of individuals working on productions.

What data was at risk

The listing refers only to “internal files exfiltrated in ransomware attack.” No inventory of specific file types or data categories has been published. Organisations of this kind commonly store client records, employee information, project documentation, and technical assets, yet the exact contents of any exfiltrated material remain unconfirmed.

The real-world impact

Exposure of internal files can create operational disruption for the company and its clients while raising the possibility that personal or professional contact details could be used for targeted follow-on activity. Without a confirmed dataset or notification from OnSight, affected individuals have no verified way to assess their specific exposure at present. The organisation faces potential reputational and contractual consequences if the claimed material proves authentic.

Were you affected?

Check any direct communications from OnSight for official notifications. Review your own records for any project or contractual relationship with the company. You can also run a free exposure scan of your email address against known breach data to see whether your information has appeared in previously published datasets.

• Monitor email and postal addresses associated with any film or broadcast work.
• Enable multi-factor authentication on accounts that may share credentials with production systems.
• Watch for unusual requests referencing past projects or equipment bookings.

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