Lightweight antivirus programs that have very good detection rates and do not clog the system they're supposed to defend used to be a rare sight not so long ago. Nowadays, cloud-based solutions are to be easily identified in this software category and among the best there's Panda Cloud Antivirus Free. Thanks to its innovative Collective Intelligence feature, this antivirus is capable of scanning the computer while remaining incredibly light on hardware resources, not to mention that its detection rate is now significantly better. The interface is quite pleasant and eye candy, with all the functions quite at hand. You can easily start a scan, view reports concerning your previous scans, tinker with its settings. All these are within a single click from the main window. What really impressed us during our testing was the way Panda Cloud Antivirus Free Edition managed to flirt with computer resources because it was still running in the System Tray without hampering the CPU and the RAM at all. Panda Cloud Antivirus Free Edition protects your data against multiple types of malware, so you will be fully secure when it comes to viruses, Trojan horses, adware, spyware and any similar threats. Another great thing is that it offers you a feature for 'Autorun & USB Vaccination' that will prevent external drives to run automatically when connected. As our tests confirmed it, the detection rate is very good, but sometimes this works against it because some perfectly legitimate applications can be blocked by Panda Cloud Antivirus. This is due to the behavioral analysis that deems processes safe or unsafe. To prevent any similar problems it's advisable to place those kind of apps on the exclusions list. All in all, Panda Cloud Antivirus Free Edition is a very good product that works amazingly fast, it's efficient and won't bother you at all.