By 
What is Malware?
Malware refers to software programs developed to harm or do other undesirable activities on a computer system.
History of Malware
Individuals and organizations have been targeted by malware since the early 1970s. Since then, millions of different malware variants have hit the world, all with the object of wreaking as much havoc and damage as possible.
What Can Malware Do?
Malware manifests itself in a number of different ways. From demanding a payoff to stealing sensitive private data, hackers are becoming more and more sophisticated in their method.
Types of Malware
Virus
A virus is a piece of computer code that inserts itself within the code of another separate program, then forces that program to take malevolent action and spread itself.
Worms
It is a separate piece of malware that reproduces itself, with the object of spreading, without the need for any host.
Trojans
A type of malicious code or software, a Trojan is designed to harm, upset, steal, or wreak some other damaging action on your data or network.
Ransomware
Ransomware is a type of malicious software developed to deny access to a computer system or data until a ransom is paid.
Scareware
It is a malware method that forces users to believe they need to download or buy malicious, sometimes useless, software.
Spyware
Spyware is software that furtively, and without permission, gathers information from a device.
Adware
Also known as advertising supported software, Adware is software that shows undesirable advertisements on your computer.
Rootkit
A rootkit is a secret computer program developed to provide sustained privileged access to a computer while actively masking its existence.
Exploit Kit
An exploit kit is a utility program that cybercriminals use to mount exploits against susceptible programs.
