Corporations should be as concerned about personal computers inside the network perimeter as those riding its boundary, warns Symantec's security team.

Vincent Weafer, senior director of Symantec Security Response, said cyber-attackers are shifting their efforts from outside the intranet boundary to inside.

The attackers are taking an increasing interest in intranet-facing private network services in common desktop personal computers.

According to Weafer, the farms of desktops inside the network perimeter provide a rich picking ground for attackers. They are often less secure than systems that face the Internet directly, making them attractive recruits for orchestrated actions such as denial-of-service attacks, said Weafer.

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