Recently i was viewing some images of the black labrador dog at the google. On that i clicked on the last photo. When i clicked on it, a fake scan of fake antivirus started on the browser and it was not able to let me exit. It was telling me to download the fake antivirus. However, the Comodo which is installed on my computer took no action. Later when i visited the same site by using G-DATA antivirus it detected that virus. I want to know that why my comodo does not detected the virus.