Use or even possession of an illegal copy is also software piracy.
Users copy software without appropriate licensing for each copy.
This includes companies who do not monitor the number of licenses and allow more than the maximum number of users to install copies of licensed software. Users who put a copy of their work software on their home computer, or vice-versa are also violating the license agreement. If no license information or serial number accompanies such a copy, it is likely to be pirated. Unauthorized copies are downloaded over the Internet. If serial numbers and downloads are made available on the Internet, make sure that the publisher has authorized this distribution.