If possible, always download the software directly from our site or get it from an authorized distributor. If this is not possible, at least be sure to check the data of the installation and/or executable file (length, creation date and unique fingerprint (MD5 hash) against the reference values published on our website for the corresponding file). We recommend that you check these data even if you downloaded the software from the official site, to make sure that it has not been modified during the download and installation process by some malicious virus already present on your computer.