Cyber security protects our facts, software, websites and our important evidence from unauthorized personages or cyberpunk. Now a day we are using social networking sites and from these social networking sites there are more prospects to escalate the cybercrime. For these reason only cyber security invented many projects. Cyber security protects the networks, computers, mobiles, websites and data from cyber-attacks. The attacker or cyberpunk attack’s or hack’s the websites or the important facts and he can use the evidence or the fact for misguide or misuse. The cyber security includes the various controlling systems in the management to dependability the software of the personage. In these research paper I proposed the deep study of cyber security and precaution from cybercrime. I also give the various security types related with cyber security.