Viruses, worms and Trojan horse infections sometimes get mistaken as the same and lots of people think they can unleash the same harmful actions on a computer sytem. This is incorrect however because the virus and worm can replicate but not the Trojan. Viruses, once installed can target and infect other software executables that might be opened, can make several copies of itself and will also spread with the intentions of damaging many system sectors, files and other features. The Trojan horse is more concerned with enabling outside or malicious external sources access to a PC system. So once you have installed a downloaded material from the web the Trojan will be able to open a portal for hackers to hack a system and gain remote access where they can manipulate and harmful modify files, content and settings.
To make matter even worse hackers could install more infections on your system, try to steal information and can easily record your passwords when you type them because they can see your screens. But what about spyware? Spyware will only monitor what you are doing, can capture browsing habits and also more sensitive data that can be transmitted to advertisers and others. It's also very dangerous and although it lacks the malicious damaging capabilities of the others that were mentioned above it has the ability to steal personal information which is a huge concern. So what protection is the best apart from using free malware remover tools which can be downloaded at http://www.malwareremover.info/
Firewalls are another good security feature which can help you in that they stop unauthorized users from hacking a system while online. The top and most effective means to protection obviously lies with security tool or free malware remover applications because they have the complete capabilities of finding and deleting harmful content. Also, don't forget that ensuring your security program is always updated with new definitions will make a big difference because newer updates will enhance its scanning and detecting abilities.