But though the protection mechanisms make the job of exploiting flaws harder, they're plainly not impervious.

How did hackers exploit four different "zero day" flaws in Microsoft Word?

Attackers can also break into systems using automated tools that exploit flaws in programs that listen for connections from remote hosts.

Memory cards or cartridges that offer functions similar to modchips work on a completely different concept, namely by exploiting flaws in the system's handling of media.

These four issues were only the latest in a series of attacks exploiting previously undiscovered flaws in a wide array of Microsoft Office applications.

In addition, Google retained an independent company to enhance detection of pharmacy advertisers exploiting flaws in the Google's screening systems.

Meant to save money, this combination poses risks because it might enable hackers to exploit flaws in the Web server to gain access to a company's database.

And he said he could not say whether any sales pitches made by Perot Systems included a discussion of how to exploit flaws in the California markets.

Intense Scrutiny The defense has tried to exploit not only Mr. Riley's admission of wrongdoing but also flaws in the men who were attacked.

The software appears to be updated regularly to exploit new flaws, such as the flaw discovered in September 2006 in how Internet Explorer handles certain graphics files.