There's one master-planned community that would be extremely close to im flash (again, if that's where you'll be working) -- like, five minutes away. It's near the freeway and it's only been going for the last couple of years. There's not lots there yet, but it's growing quickly. I don't know if you'd be interested, but here's a link for it:
http://www.traversemountain.com/main.php?page=lifestyle
There's also Suncrest, which I think others have mentioned. It would also be close, although it means driving up and down the mountain every day, and dealing with the wind at the top all day long. But the view is unbeatable, so...I guess you might want to at least check it out.
http://www.suncrest.com/neighborhoods/
There are probably others in that area, too. It's growing like crazy. I think any real estate agent in the area would probably be able to point you to some others.
There are some gated communities around, but I don't think they're really that much safer. Maybe a little. In general, if you lock your cars, keep your garage closed, etc. you won't really have a problem. The crime rate is really very low here. Just use common sense like anywhere else.
If you look for gated communities, you'll probably find them in the higher-end housing in Alpine, Highland, Cedar Hills, and then down in Provo (but I really don't think you want to live in Provo. I love Provo, but I don't think it would be a good fit for you. Plus, it's about a 30-40 minute commute).