Hi. I'm new to the forum and I have a very unusual queston. But let me start from the beginning. Like many people, I did not know that one should create an administrator's password to log into one's computer after booting up. Therefore, for quite a while, I would only go straight to using my computer after booting up. Eventually, I started to have some really strange problems with my computer and eventually went to one of the computer help forums. The computer help forum that I went to told me that not having an administrator's password was a very serious sercuity breach for my computer and told me that I needed to create one in additon to getting rid of any malware infections that I might have had. Well, after many scans, etc., I believe that I eventually got rid of any infections which my computer may have had. I even got a "clean bill of health" from a site that analyzes hijackthis reports. But here's the question/situation: I live in an apartment complex that has an automatic locking door where the tenets can remotely open the door for visitors via their telephone. Also, there's a closed circuit security camera in the foyer that is connected to the tenets' television sets, and for tenets who have cable television(like myself), the view of the closed circuit security camera in the foyer is hooked up to one of the unused cable channels in the system. Now I could be wrong, but I'm thinking that if the closed circuit security cameras in our building are also connected to our cable television system, which also includes that system's high speed broadband internet cable service(which I also have), is it possible for a hacker to hack into our building's security system via the cable line if that cable line was compromised via a compromised computer? And the reason why I ask is because around the same time that my computer was doing all sorts of strange thing, my apartment building's security system had gotten hacked into and our automatic door was neutralized for a while and eventually some computer technians had to come out and work on the computers in our apartment complex's offices to fix the problem. Does anyone have any thoughts on this?