Security is the main part of our computer because many hackers easily hack some important data.securitySecurity means safety, as well as the measures taken to be safe or protected. … Often this word is used in compounds such as a security measure, Computer security, the protection of computer systems and information from harm, theft, and unauthorized use. Computer hardware is typically protected by the same means used to protect other valuable or sensitive equipment, namely, serial numbers, doors and locks, and alarms.there are five main types of security.

Critical infrastructure security consists of the cyber-physical systems that modern societies rely on.

Common examples of critical infrastructure. electricity grid .water purification. traffic centers. hospitals

Having the infrastructure of an electricity grid on the internet makes it vulnerable to cyber-attacks.

Organizations with responsibility for any critical infrastructures should perform due diligence to understand the vulnerabilities and protect their business against them. The security and resilience of this critical infrastructure is vital to our society’s safety and well-being.

Organizations that are not responsible for critical infrastructure, but still rely on it for a portion of their business, should develop a contingency plan by evaluating how an attack on critical infrastructure they depend on might affect them. Application security

You should choose application security as one of the several must-have security measures adopted to protect your systems. Application security uses software and hardware methods to tackle external threats that can arise in the development stage of an application.

Applications are much more accessible over networks, causing the adoption of security measures during the development phase to be an imperative phase of the project.

Types of application security; antivirus programs firewalls encryption program : Network security:

As cyber security is concerned with outside threats, network security guards against unauthorized intrusion of your internal networks due to malicious intent.

Network security ensures that internal networks are secure by protecting the infrastructure and inhibiting access to it.