Applications used to protect your device/network.

Antivirus: An antivirus is a software that protects, prevents, and removes viruses from your machine.

Antivirus mainly works on virus definition(Updates), these updates are updated on the antivirus server(server of the antivirus product which is in use) and after which all the devices are updated online (virus definition)

This virus definition consists of a new virus hash values and signatures.

Firewall: Firewall is a network security system that monitors the network incoming and outgoing traffic.

In simple terms, the firewall is a watchman of your building who knows who comes in and who goes out of your building.

Intrusion Detection System(IDS):

IDS is a device or software which monitors the network or a machine for malicious activity and if found any then the alerts are sent to the administrator.

Intrusion Prevention System (IPS):

IPS is a software or hardware form of network security device which monitors the network or a machine detect and prevent threats.

Behavior-based detection: 

This kind of detection occurs when software or application doesn't work according to their behavior.

For example, a screen keyboard application is used as a screen keypad but in the background, if it's changing windows file then there's a behavior-based detection.

Email Protection:

Email protection is a feature of antivirus software that has the ability to scan inbound and outbound emails for infected attachments and URLs of malicious sites.

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