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how can you make sure that your computer is hack free w/c, means no one can hack your system?
This is impossible! If someone really wanted to hack into your system, with the right skills and knowledge, they could, no matter what measures you have to taken to secure your system!
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what will be the possible way to prevent from being hack?
Firstly make sure you have applied ALL patches that have been realeased for your operating system. Secondly install a good firewall and close ALL ports that you do not really need. Thirdly install good Anti-Virus software, as well as maybe a trojan scanner and update these on a regular basis.
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what software that i can buy to protect my system?
I personally use Nortons internet security on windows box, which contains Anti-Virus software as well as a personal firewall, which will lock down your box securely enough, when configured correctly.
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how do they hack your computer?
Well there are various different ways a so called hacker can compromise your system.
By using a trojan horse to gain access to your system, its a simple matter of you opening what may apper to be a legitimate attachment, which is really a server of a trojan. Once you open this the so called hacker would then have full access to your system and could do whatever they please.
By scanning your IP address for open ports, seeing what services are running on those ports then finding exploits for those services.
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what possible solution that i can make when im being hack?
If your system has been compromised, disconnect from the internet, pull the plug on your modem, then do a full system scan with your AV and trojan scanning software and delete all suspicious file found.
Those are just a few pointers that should get you on your way to securing your box and making the internet a safer place!
Cheers
r3b00+