Friend gets "clickjacking" alert from NoScript, when attempting twitch login

[VirtualLarry]

Is this a spurious alert, or is some program running on his PC or maybe router malware redirecting his pages, such that they are trying to steal his login credentials?

 

[John Connor]

I've gotten that before and it might be a false positive in the way the script is made. Use Sandboxie.

Just went to the Twitch login and didn't get a warning.