Is Internet Explorer a 'peril'?
Microsoft’s own security chief has warned millions of people who continue to use Internet Explorer as their main web browser that they are placing themselves in “peril.” Microsoft is no longer supporting new development for Internet Explorer, which means security concerns are rampant.
What is the difference between Firefox and IE?
Firefox and IE are web browsers. The Firefox browser is a separate application as (on Windows) it is not a shell nor does integrate itself with IE. IE or any browser may seem like a search engine if you have the Homepage in browser set for Google or another search site.
What if a site is incompatible with Internet Explorer 11 for Windows 7?
When a site is incompatible with Internet Explorer 11 for Windows 7, you'll see the Compatibility View button in the address bar. By turning on Compatibility View, you can help fix display problems on sites. See if the Compatibility View button appears in the address bar. (If you don't see the button, there's no need to turn on Compatibility View.)