A spyware, in today term is a code that aim to spy on an individual, company or even a country. It try to do it without their knowledge, using hiding technique, most of the time spyware base tool will try to steal sensitive information from the target victim.
A spyware can be split into 4 categories:
Tracking cookies – A cookie that aim to track what site you see, what you search for and by that it can show you relevant content, it can be used for good thing and for bad things, this is use in web browsers.
system monitors – can log thing you do on your computer, from passwords, habits, text you write, screen shoot of you system and so on, include credit card number bank account and so on.
adware – are small tools that use to advertise thing on your computer so that the author, or company behind the adware can make money, it also use algorithm that cheek what you do on your computer to how you relevant ads.
Trojans – a Trojan is a small software that attached to other software or tools and as soon as you run/use the attached tool it will automatic install the Trojan, from here it really depend the Trojan about what will happens.
Here is a list of the best free antispyware 2013 that you can find and download from the web, in this list you can find 5 free anti spyware tools for your computer.
- SuperAntiSpyware Free Edition
SUPERAntiSpyware Free Edition is 100% Free and will detect and remove thousands of Spyware, Adware, Malware, Trojans, KeyLoggers, Dialers, Hi-Jackers, and Worms. SUPERAntiSpyware features many unique and powerful technologies and removes spyware threats that other applications fail to remove. (from the main site)SuperAntiSpyware
- IObit Malware Fighter
IObit Malware Fighter Free is an advanced malware & spyware removal utility that detects and removes the deepest infections, and protects your PC from malicious behavior in real time. With IObit unique “Dual-Core” anti-malware engine, it’s able to detect the most complex and deepest malware, like spyware, adware, trojans, keyloggers, bots, worms, and hijackers, in a fast and efficient way! (from the main site)IObit Malware Fighter
For over 15 years WinPatrol has provided a tool that fills a need not available directly in Windows. WinPatrol has evolved from removing simple adware to complex malware infiltrations. By maintaining control over what changes are allowed on a Windows computer this small, non-obstructive application lives on attracting new fans thanks to social networking. (from the main site)WinPatrol
- Malwarebytes Anti-Malware Free
Malwarebytes powerful technology to detect and remove all traces of malware including worms, trojans, rootkits, rogues, dialers, spyware and more. (from the main site) Malwarebytes
Please keep in mind that there are other tools that enter into the category of antivirus, that are also best and also free and you can download them from the web, and it is highly recommended that you will have one of them installed on your computer, and most of the tools can also be used to scan and search for spywares on your computer.
Please also look in this article best free antispyware in there you can see a nice method you can use to compare between antispyware tools.