Four new holes have been discovered in the Internet Explorer (IE) Web browser that could allow malicious hackers to run attack code on Windows systems, even if those systems have installed the latest software patches from Microsoft, security experts warn.
Some of the new flaws are already being used to attack Windows users and include a glitch that allows attackers to fake or "spoof" the address of a Web page, as well as vulnerabilities that enable malicious pages from the Internet to be handled by IE with very little scrutiny or security precautions.
Microsoft has a list of "safe browsing" practices at Web page. Companies should consider increasing security in the Local Machine (or MyComputer) zone. Steps for doing so are also available on a Microsoft Web page.