reuters report citing a government memo saying that zoom is responding to their concerns. rivals, though, are not going to wait already we are seeing microsoft's skype as well as google's duoideo conferencing surveillances mimic and encroach on some of zoom's success. take a look at the shares of zoom of course still one of the biggest winners this year, up nearly 70% year to date, but last week, down 20%, today, another 7.5% >> what was the reason zoom had such ferocious growth over the prior couple years relative to the other names you threw out there? and does that difference still apply now? >> that's great question, wilf let me ask you, have you ever used google hangouts, skype, some of these other services put simply, zoom just a lot easier to use. there aren't a lot of those barriers you see with other services there's no password. that wasn't a default until recently when you get into a zoom room. that has been part of the problem and now it's going back on some of those measures like asking for a password, putting you in a waiting room before you get in, and that's giving a chance for its rivals to copy some of the things like that now perhaps we'll see if it leav