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gr8hacker143

really very very good

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shikha

haking means intenttially gaining unauthorised access to a computer system. the term "hacker" has changed over the last 40 years: 1960s-1970s a hacker is a clever and creative programmer; not destructive; harmless 1970s-1990s hacking starts to become negative; breaking into large computer systems e.g. Govt agencies; spreading viruses; stealing/changing information. also phone phreaking (using phone systems illugally) 1990s-today Hackers exploit the vulnerability of the Internet; very destructive; disrupetive; involving organised crime; increased risk for e-commerce.