Security ONE Alarm Systems Listed by play Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On December 20, 2025, the Play ransomware group listed Security ONE Alarm Systems on its data-leak site and stated that it had exfiltrated internal files during a ransomware operation against the Canadian company. No figure has been released for the number of individuals whose information may be involved, and the company has not issued a public statement confirming the scope or contents of any data taken. The incident remains limited in verified detail. Public reporting indicates only that internal files were removed. No timeline for the intrusion, no description of the initial access method, and no confirmation of encryption or ransom demands have been disclosed. The listing itself constitutes the primary public record of the event.

Breaking down the breach

The available information centers on a single claim posted by the Play group on its leak site. The post asserts that files were taken from Security ONE Alarm Systems but provides no inventory of documents or indication of how many records are involved. No independent verification of the data’s authenticity or volume has been published. The number of people potentially affected is therefore unknown, and the precise date of the intrusion has not been reported.

The group behind it: play

Play is a ransomware operation that first appeared in public reporting in 2022. The group typically uses double-extortion tactics: it encrypts systems and also removes data for later publication if a ransom is not paid. Its listings have included organizations in multiple countries and sectors, with claims posted on a dedicated leak site when negotiations fail. In this case the group claims responsibility for the Security ONE incident; that claim has not been independently confirmed by the company or by investigators.

About Security ONE Alarm Systems

Security ONE Alarm Systems provides monitored alarm and security services to residential and commercial customers in Canada. Companies of this type maintain records that include customer contact details, service addresses, alarm-system configurations, and billing information. Because the systems are connected to physical premises, the data can also contain details about building layouts and access points. A breach at such an organization therefore touches both personal information and operational security data.

What was likely exposed

The only data category named in public reporting is “internal files exfiltrated in ransomware attack.” No specific file types, customer lists, or record counts have been released. Organizations in the alarm and security sector commonly hold names, addresses, phone numbers, email addresses, payment information, and technical details of installed systems. Whether any of these categories were among the files taken remains unconfirmed.

The real-world impact

For individuals, the main concern is the possible misuse of personal or address-linked information for fraud or targeted physical activity. For the company, the exposure of internal operational files could affect client trust and require remediation of any compromised systems. At present there is no public evidence that the data has been used beyond the initial listing, but the absence of Reported Details leaves the full extent of risk unknown.

If your data was in this claimed breach

Monitor bank and credit accounts for unusual activity and consider placing a fraud alert with credit-reporting agencies. Change passwords for any accounts linked to the affected service and enable multi-factor authentication where available. Readers can run a free exposure scan of their email address against known breach data to check whether their information appears in public listings from this or other incidents.

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