Computer and network security has become very important to businesses, government, military, and individuals. Many companies have been compromised and personal information obtained and used without authorization. It is very important to have computer and network security to keep hackers and malware from collecting data and destroying a computer system and network. Computer security protects all of the data that is stored on your computer. Every component should be protected that includes hardware, software, and data.
The history of Network security started when hacking crimes started in the 1980’s. Robert Morris was a computer hacker that released a worm that affected 6,000 computer systems. It created a large monetary financial lost because of a computer worm. The Computer Emergency Response Team (CERT) was said to be form after the attack to inform users they had security problems. ”The Department of Homeland Security's United States Computer Emergency Readiness Team (US-CERT) leads efforts to improve the Nation's cybersecurity posture, coordinate cyber information sharing, and proactively manage cyber risks to the Nation while protecting the constitutional rights of Americans (US-CERT).”

Hospitals have major concern in protecting computer and network security. The information in hospitals have very valuable information such as patient records, social security number and payment information. All of which is harmful if it gets into the incorrect hands such as black hat hackers. A firewall can be a hardware or software allowing or blocking data transmission into a computer or network. A firewall examines packets that are passing into the network if it is a good pack if it is a good packet it allows it to pass through if it is not it will be