The browser has plenty of new security features, such as expanded phishing-site blocking of known malware distributors. IE 8 also highlights the domain name in the URLs you visit, making it easier to recognize a phishing scam.

New as well are a private browsing mode (called InPrivate Browsing) and behind-the-scenes tuning to help neutralize attack code on poisoned Web sites. Read .

Of course, isn't a silver bullet, but from a security standpoint the upgrade is a no-brainer. However, the new browser may not display all sites correctly-even in its compatibility (with IE 7) mode. If IE 8 can't handle a site you need to view, you can uninstall it (via Add or Remove Programs) and revert to the earlier browser.

Firefox 3.0.8 closes two security holes that could allow an attacker to use a poisoned Web site to take over a PC. Make sure you have the latest security plugs by clicking Help, Check for Updates, or by visiting , and .