Yaview does dont allow viewing of users’ cams without permission, it simply sends an anounymous request to that user. That request can also be denied. To the best of my knowledge there are no programs available that will view a cam without permission, several have been claiming to be able to do this but the ones i’ve seen are bogus or contain some type of trojan. Please be aware that there is a file claiming to be a yawiew beta3 prerelease posted on several forums that installs a file and folder very similar to the backdoor assissin trojan. It is unknown at this time if this is an actual trojan