What is Security ?

• Security means safety, as well as the measures taken to be safe or protected.
• Security refers to all the measures that are taken to protect a place, or to ensure that only people with permission enter it.

Types of IT security-

Depending on the experts, there may be different types of IT security. Each security expert has his or her own categorizations. However, for the most part, there are three broad types of IT security:

1. Network security
2. Internet security
3. End-Point security
4. Cloud security
5. Application security.

1. Network security

• Network security is used to prevent unauthorized or malicious users from getting inside your network.
• This security ensures that usability, reliability, and integrity are un-compromised.
• This type of security prevent a hacker to accessing the data inside the network.
• Some network security threats are Malware/Ransomware, Computer Viruses and Worms, Phishing attacks, Distributed Denial of Service (DDoS).

2. Internet Security

• Internet security involves the protection of information that is sent and received in browsers, as well as network security involving web-based applications.
• These protections are designed to monitor incoming internet traffic for malware as well as unwanted traffic.
• Firewalls act as a barrier between a trusted internal network and untrusted external networks (such as the internet). They control incoming and outgoing network traffic based on an organization's security policies.
• VPNs provide secure communication over the internet by creating an encrypted tunnel between two endpoints.
• Some  Most Common Internet Threats are Spam, Adware, Trojan, Virus, Worms, Phishing, Spyware, Key loggers..

3. End-Point security

• Endpoint security provides protection at the device level.
• Devices that may be secured by endpoint security include cell phones, tablets, laptops, and desktop computers.
•  Endpoint security will prevent your devices from accessing malicious networks that may be a threat to your organization.
•  Advance malware protection and device management software are examples of endpoint security.

4. Cloud- Security

• Applications, data, and identities are moving to the cloud, meaning users are connecting directly to the Internet and are not protected by the traditional security stack.
• Cloud security can help secure the usage of software-as-a-service (SaaS) applications and the public cloud.
• A cloud-access security broker (CASB), secure Internet gateway (SIG), and cloud-based unified threat management (UTM) can be used for cloud security.

Application Security

• With application security, applications are specifically coded at the time of their creation to be as secure as possible, to help ensure they are not vulnerable to attacks.
• This added layer of security involves evaluating the code of an app and identifying the vulnerabilities that may exist within the software.