ScoutQuest28 Sep 2026
Insilco500211Data breach

Suspected Ransomware Incident Hits Insider Lens Application; Trading Window update Delayed

A suspected virus/ransomware issue was detected on the server hosting the company's Insider Lens application.

Incident Type
Suspected virus/ransomware issue detected on server hosting Insider Lens application
File Extension Indicator
".unlck4u" extension observed on files
Server Status
Server isolated, being formatted and reinstalled with clean OS
Application Status
Insider Lens application temporarily unavailable
Update Impact
Trading window closure update due September 28, 2026 could not be completed on time

What happened

A suspected virus/ransomware-related security issue was detected on the server hosting the company's Insider Lens application. The software service provider's preliminary investigation observed unusual file extension changes, including files with the ".unlck4u" extension, and certain "Windows cannot find..." errors, which may indicate a ransomware-related incident.

Steps being taken

Compliance impact

The Insider Lens application is temporarily unavailable. Insider Lens is the kind of system companies use for insider-trading compliance tasks, including trading window intimations. Because of the incident, the company could not complete the update relating to closure of the Trading Window within the stipulated timeline of September 28, 2026. It says it is making all reasonable efforts to complete the update at the earliest once the application is restored.

Context

The company is under voluntary liquidation with effect from 25.06.2021, as stated on its letterhead.

The intimation is signed by the Company Secretary and Compliance Officer.

Source: BSE · 28 Sep 2026

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