Using pirated software, even unknowingly, can cause system failure, endanger your personal data, and negatively affect your business productivity. Is the fourth most pirated software in the world, according to a. AutoCAD® is the most frequently pirated software from Autodesk obtained through torrents or cracks. Software piracy includes the unauthorized downloading, copying, or distribution of software. Using previously registered software, downloading software or AutoCAD torrents from unfamiliar platforms, and using unauthorized keygens to generate invalid serial numbers or license keys are the most common ways pirated software is obtained. Victims of software piracy often believe they are purchasing genuine software. Don't become a victim of pirated software.