DHS, Microsoft Warn About Internet Explorer Security Hole
Homeland Security is joining Microsoft in warning about a major security hole.
The flaw affects post-Windows XP computers.
It's in Internet Explorer version six, seven, eight, nine, ten and 11.
Microsoft says this particular security flaw is dangerous because it could give a sharp hacker a level of access equal to that of the person who's using the computer.
Hackers are already using this security hole to break into financial and defense business networks.