"On security, Microsoft says IE8 is more secure than IE6 or IE7,
which is true. But to back up its claim that IE8 is the most secure
browser, Microsoft cites a self-sponsored study that Opera has
since called out as manipulative and incorrect. The rest of the
arguments supplied here — more advanced phishing and malware
protection, better defense against cross-site scripting, better
security out of the box — fall flat when you look at similar
features in Firefox and Chrome.
"It's the last two that are the biggest head-scratchers.
"IE8 is more adaptable than Firefox and Chrome, both of which
are fully open-source? More customizable than Firefox, which has
the richest, most vibrant add-on community among all the browsers,
including the Two Browsers Not Appearing In This Comparison?"