Well you've stated the conventional wisdom about the IE/OS integration, tjesterb. I haven't yet played with IEradicator or 98 Lite on my old W98SE system to see what life without IE/OS integration is like on that OS. I guess it wouldn't make that much difference functionally although perhaps a bit safer maybe. Some folks who've done it have told me it's OK. They reinstall IE as a standalone browser since they still like it. I'm not sure if XPLite can accomplish exactly the same thing or not on XP. http://www.litepc.com/
From time to time there are vulnerabilities discovered in the moz/opera browsers, usually the serious ones are addressed fairly quickly. But nothing's perfect. I don't think the phishing exploit in Opera (the second link Essencay posted) has been addressed yet. I briefly browsed the Opera security forum and saw some people arguing that it wasn't a security issue (it sure is when they see it in IE, lol) or was only theoretical (even though there's a proof of concept exploit) and besides was only "moderately critical." One even accused the poster who mentioned it of trolling. Jeez.
For those who aren't familiar with phishing an example is those scam emails that claim to come from PayPal or a bank and you click on a link that leads you to a lookalike site and if you check the address bar it looks real. You might input your info or whatever thinking you're on a legit site and whamo the bad guys have it. So one should not mess with such emails and if there's any question if an email is legit or not, use a previous bookmark or type in the real url to go to the legit site. This is the most common use of phishing exploits, although funky links on websites could do the same.
Anyway, it is a plus that Moz/FF and Opera aren't incorporated into the OS like IE. Kevin McAleavey (developer of BOClean an antitrojan app and other programs) has ranted about the dangers of IE's OS integration for years. He sees how malware works at the system level so I'd guess he'd know what he's talking about. Still some exploits are possible with Moz/Opera although IE remains the main target. Arguably they wouldn't be as bad as IE's with its direct mindmeld with the OS, but any security/privacy compromise ain't good. There's nothing 100% safe as long as a PC is in communication with the outside world in some fashion.
One option/recommendation is to disable scripting including javascript in all browsers to be safer since even js can be a way for malicious script to run. But although one can function reasonably ok on the net without IE's ActiveX, javascript is used so frequently it's sort of difficult to do without completely (even the smilies here use js).
People just have to figure what their needs and comfort levels are vs. the potential risks. And take reasonable precautions. It just P's me off that we have to concern ourselves at all with all this crapola. But mainly I'm lazy so I take precautions so I don't have to deal with cleaning up a PC or reformating, etc.
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