If we talk about the world's biggest hacker,

Gary McKinnon, a resident of America, who sat at home

NASA's website was hacked along with America's military system for 13 months.

And that too at a time when the Internet was not so popular.

And that time was from 2001 to 2002

He had put such a malware in the computer whose password only he had.

After hacking, he deleted many NASA files.

Eventually it was caught and people were impressed by its hack.

And on public demand he had to be released

And today I have one of his companies