Los Angeles-based CyberDefender, a developer of PC security, antispyware, and antivirus software, disclosed this morning that it has hired Steven R. Okun as the firm's new Senior Vice President of Marketing. Okun joins the firm from LeadPoint, where he was Vice President of Sales and Business Development. Okun has also previously served at a similar position at Commission Junction, and has also served at Success Learning Systems. CyberDefender said Okun reports to CEO Gary Guseinov and the firm's board of directors.