Malware
Malware (a portmanteau for malicious software) is any software intentionally designed to cause damage to a computer, server, client, or computer network. Malware does the damage after it is implanted or introduced in some way into a target's computer and can take the form of executable code, scripts, active content, and other software. The code is described as computer viruses, worms, Trojan horses, ransomware, spyware, adware, and scareware, among other terms. Malware has a malicious intent, acting against the interest of the computer user—and so does not include software that causes unintentional harm due to some deficiency, which is typically described as a software bug.
Shnakule
Shnakule is the biggest malware network in existence. It averages over 2000 hosts and has had as many as 4357. It targets users while visiting trusted sites and routes them to malware by using relays, exploits, and payload servers. These are continually shifted to new domains.