I have windows 10 and was going to open opera but as I opened it, Kaspersky internet security detected it as a Threat! I know for a fact that opera browser is legit and that Kaspersky internet security is detecting it as a trojan but not blocking it as it is a false positive! I still don't understand why a perfectly safe computer program would be detected as a threat when opera is one of the most popular and safe web browsers on the internet. I hope this response brings an awareness to the issue of this false positive and i hope whoever sees this has a great day!