Is it possible a hacker use my PC?
826970
if he is good, then yes!
759781
You can But before that, install an anti spyware and scan the PC. I can give a few links that offer free virus and spyware removers...! Norton, AVG , Avast are free antivirus software. Ad-aware, Ewido are free spyware removers. You can download free softwares at\nhttp://fixit.in/antivirus.html and http://fixit.in/spywareremover.html
982806
Probably it's a hacker. But remember Norton is not as good as some people belive. Here you have some good and free programs:\nhttp://askcomputerexpert.ws43.com/download/
47878
First run a viruse scan. They may have added tools that allow to keep coming in. Second if there are any strange files, removed files, modified files you may have been hacked. But there really is no way to know unless they changed something.
1024204
I think is a virus or spyware
495465
There are ethical hacking softwares that can try to hack into your system and let you know your vulnerabilities. They are not free though. You will need to do research and find the one thats right for you.\n\nThey will let you know if you have any phishing, SQL injections, or hidden personal information tags on your website that needs to be recoded.
749276
Good enough. And here you have some more good and free options:\nhttp://askcomputerexpert.ws43.com/download/security.htm
1044825
windows has something called a "netbios" which sometimes tries to search for other systems with the window's OS installed on them . This probe is read's as an external system access to the one with a firewall, and hence an alert. This would not mean a hack attempt. \n\nBuying the pro version of any software would help with the wages of the programmer's, but it you can't afford go with the free one. Not much difference with regards security, the pro will have various other features.
1023796
best thing to do if you didn't do a thing is to report it straight away to the authorities as some sort of hacker could be using your computer to get this stuff. people can do all sorts  of stuff these days so don't get caught in the middle
751238
Yeah. I used to be a hacker. They get your IP, then they connect to your computer using programs like netbus, subseven, CMD. Then they can look at your computer screen by installing a certain program (don't want to let other people know about this). Before they do this, they scan to see if you have any open ports, if you have a firewall, you'll be safe.\n\nEDIT: If He's really scaring you, disconnect your router from the PC and call the internet company for a new IP. Chances are, he's obtained ALL of your passwords and personal info. You might want to contact the proper authorites for this situation. This is a  serious issue.
858116
Yes and that's how FBI traces those people who hacks computers. Challenge them if u would like to, i bet they'll pay u and your family a visit soon.
825066
Yes, unless you have a good antivirus program installed.\nHere you have some free antivirus programs:\nhttp://askcomputerexpert.ws43.com/download/
916687
Of course there are ways. All it takes is the right trojan to be downloaded to your computer and your computer can be "owned"\n\nA trojan can be downloaded from software that has one bundled with it ,usually from Limewire or other P2P file sharing programs.\n\nJust visiting certain websites with an un-updated and un-patched Windows XP can cause your computer to become compromised or as you say "hacked".\n\nOpening infected  e-mail attachments or clicking on certain links in an instant messenger can also compromise your computer and put your data and identity at risk.\n\nKeyloggers can also be attached by someone who has physical access to your computer, which can record every keystroke.\n\nIn short a firewall alone is not enough to keep your computer secure.
158218
First off, how do you know it is a she? It sounds like maybe you know who the hacker is. \n\nIn either case, change your password.
70555
Sometimes there's no evidence at all.\n\nIf you know your computer's normal operation, sometimes you can detect abnormal disk activity or abnormally slow connection when you're online, but those could also be due to many other things.\n\nTo avoid having someone hack in to your computer, always:\n\n1. Have an anti-virus program installed, and keep the definitions up-to-date.\n\n2. Keep your operating system up-to-date with the latest fixes from the vendor (Microsoft for Windows, Apple for Macs, etc.)\n\n3. Install a software firewall such as ZoneAlarm. The one provided by default in Windows XP isn't always enough to protect you.
981398
yes but i'm not gonna tell you how because you're snooping..\n\n\njust kidding- reality, most likely no. unless you have a keylogger installed on your computer before she did it, which most likely you didn't. keyloggers are pretty hard to come accross now too since anti-virus programs are getting so advanced, and you probably have one running.
1040176
Sounds like a hacker.....Good Luck!