Patrick Clawson has left CyberGuard Corporation to take up the position of chairman, CEO and president of PatchLink.

Clawson has more than 20 years of software industry experience and he will work with PatchLink's management team to execute a new global sales strategy.

In a four-year stint at CyberGuard, Clawson oversaw a period of acquisitions and increased revenue. In August 2005, CyberGuard was acquired by Secure Computing.