IE 7 VS Firefox 2?

I just want to compare these in term of Security ONLY. just tell me as the current time, which is more secure? By the way, is Opera 9 by now on top of these 2, again, for security, ONLY

IE 7 VS Firefox 2?safari browser

Firefox is preferable from the security point of view. Contrary to what most thing, not because it is more secure than IE - it is not. Security flaws are discovered in it just as often (if not even more often) than in IE.

However, Firefox is used by fewer people - 9 of every 10 people use IE. This means that an attacker is likely to concentrate his efforts against IE - because it will give him a larger vulnerable population and a better payoff for his efforts. In that aspect, Opera is even better, because it is used by even fewer people.

In addition, both Firefox and Opera do not support ActiveX - and malicious ActiveX objects (or insecure ActiveX objects) are a major source of trouble in IE. (Admittedly, you can turn ActiveX off - but few people do that.)

Regarding your additional question - yes, browsers that use the IE rendering engine are plagued by the same security problems as the original IE.

IE 7 VS Firefox 2?ds browser internet explorer

FF
Firefox
Since FireFox 2 is an open source app, it's more secure---more people will work on it to fix bugs quickly.
Opera is probably the most secure, simply because it is such a small target in user numbers, that most cyber-criminals can't be bothered to exploit it.
opera
Firefox 2, duh.
Opera is the best.
Windows Internet Explorer 7 is best on security baisis.