I have just jailbroke my 3g runnning 3.1.3. I have a few questions. I jb with jailbreakme.com and then installed the PDF app from Cydis to secure that section. I did not install open ssh, but Cydia is installed. Do I still need to change the mobile and root passwords? Next, I have several apps that connect to my pc such as Logmein, Orb, & Sugarsync. I have other apps that I do not want to be effected such as Ebay and banking. What are the chances of a virus effecting my pc through by jb iphone if I run the app? Last, how safe are Cydia apps? I am concerned about getting a virus if I download the wrong app?