Mouse Button Lock is a utility named in PowerToys 0.102, Microsoft’s collection of Windows tools. The available information does not specify what the utility does, so its exact behavior should not be assumed from its name alone.
For cybersecurity, the relevant concern is endpoint governance rather than evidence of a threat: desktop utilities can affect how users interact with a workstation. Administrators should verify a tool’s documented behavior and source, then assess whether it fits the device’s role before deploying it broadly. This is especially useful for shared or specialized workstations, where unexpected input behavior could confuse users. No exploit, breach, or security impact is established here.