Adware is a least harmful as well as most lucrative malware. Adware is a short form of “advertising software”. It delivers advertisement automatically. Pop-ups is the common example of adware, which is display your Internet browser without client permission. It is displayed by the help of advertising software, which is called adware. Often “Free” version type advertisement always show on your web browser and may be computer system.
A Rootkit is another type of malware, which has been crafted to remotely access as well as a control a computer system without being identified by victim as well as a security system or software. Rootkit is likened to the burglar concealing in the attic, waiting to take from user while you are not home.
Spyware is a piece of code that perform functions by spying on user's Internet activity clandestine way. Spyware has been designed for spying online user details information for their own lucrative purpose. Spyware has strong capability to alter security settings of software. Spyware has been used for navigating as well as a tracking exact Geo-location of computer users.
Worm is a terrible computer program that self replicates and annihilates prior information as well as a files on the terminal or machine. Worm is also a kin of malware. Computer worm work to “eat” the computer system function's files as well as a data file until the hard disk drive is empty.