Fast has launched Phase Three of Operation Tracker in its drive against internet software piracy, including those who use high-bandwidth corporate networks and high storage capacities to share illegal software.
The system enables Fast to trace those making software available illegally and see the library of what they have on offer, from both company connections and the web.
A recent Fast survey conducted with YouGov found that only 2% of the UK workforce thought that stealing software was an issue, and that they would get caught.
Tracker Three builds on campaigns against ISPs, which saw them ordered to hand over personal details of people using their networks to illegally share software and companies being confronted with evidence of illegal software used on their systems for business purposes.
John Lovelock, chief executive of Fast, said, "Corporate liability is something that management cannot afford to gloss over - misuse of software is something directors cannot plead ignorance to.
"If employees are using the corporate network for illegal activity, those in charge may be liable. Theft is theft and will be treated accordingly."
Fast will also consider going after those staff that are distributing the illegal software.