If you feel paranoid then use the OS X included firewall (System Preferences->Sharing and press the firewall start. Next CHANGE YOUR PASSWORD. Lastly create e new USER account and stop use the default Administrator account (this goes for Windows too).
Also turn of automatic login (System Preferences->Accounts->You account->Login Options). Oh, I almost forgot, activate password checking on your Screen Saver and NEVER use or activate the Root account.
Welcome to the first lesson in computer security. 101 more lessons to go.
Mac Pro Dual 2.8 Quad (2nd gen), 14G Ram, Two DVD-RW Drives, OS X 10.8.3
2006 Mac Book Pro 2.16 (first Gen) OS X 10.7.4
2TB Time Capsule, 2 TB
32G iPhone 4S Black, iPad (3rd Gen) 32G Black
Bookmarks