If you access a file virus, another virus program also access the file creating a slowdown. The antivirus comparison executable is also great interest because the version of Internet security is only 19 megabytes larger, but also includes a personal firewall and a bunch of other utilities. One thing I like about the setup is that the software alerts the user to check if other antivirus programs are already installed. We found that Port Trust failed free antivirus download to detect all viruses on our test disc virus. The executable is a series of 144 megabytes in size large, which is by far the largest antivirus executable available. As G-Data Antivirus, the combination of two free antivirus engines makes excellent detection results. According to AV-Comparatives, TrustPort has some of the adware / spyware detection rates, but also experience slow scanning speed due to the charge of two engines.