I keep getting these XXXXX wants to access your computer through Skype . I have chosen allow a couple of times thinking someone I knew was trying to get through. No one ever rings or shows up in my contacts. Have I allowed a security breachinto my mac? I got a call from citicard about a security problem and had to have a new card issued. Are these related? Should I be worried about signing in to bank accounts and such? Where do I go in skype to see who has access and Can i "reblock" those addresses that I "allowed" Or were they one time events?