BitDefender QuickScan is an online tool which uses .in-the-cloud. scanning to detect malware running on a PC very fast, usually in less than 60 seconds. Because it's fast! Whenever you need a quick check or a second opinion, such as before logging in to your favourite game, when using your bank account online or buying something online, QuickScan is the best choice.
Most online scanners are merely legacy on-demand scanners that are downloaded (along with a huge virus database) and then used to scan your PC as you would do with a normal Antivirus program. This can usually take from 30 minutes to one hour. BitDefender QuickScan takes full advantage of the .in-the-cloud. scanning technology and is capable to detect active malware in less than a minute, taking just a fraction of the system resources needed by a regular virus scan. Moreover, there is no need for annoying virus signature updates, as the entire virus database and the scanning engines are hosted on remote servers.