The old adage is "You get what you pay for". In most respects this is true, but not when it comes to PC and Laptop security. Norton and McAfee have been around for years, and now they are offered free by many ISP's. Why you ask? Simple, because they are next to useless. Norton is extremely system intensive, not to mention intrusive. Your online activities are broadcast back to Norton's servers, something they fail to notify people of. McAfee is less invasive, but also less affective. What they both have in common is this: When your subscription runs out, they no longer provide you with any protection... The amount of times I've had to clean up systems that have been running these software is insurmountable. Kaspersky on the other hand is a well recommended subscription based anti virus (AV) program. One that does still provide protection upon the subscription ending. Although updates can prove problematic under these circumstances. The best advice is to use free AV software. Avg by Grisoft is suitable for most users, although the support for Windows XP SP3 and Windows Vista is quite poor. Avast is my recommended AV of choice, with it's constant updates, silent running and low system resource usage, you hardly even know it's there half the time. It will actively block infected websites before they have a chance to load, therefore saving you from accidentally compromising your system. Additionally, it has full support and compatibility with all Windows platforms. Use of a firewall is often recommended too, although if your internet is directed through a router, the need for a firewall is at the low end of the spectrum, as most routers these days come with a built in firewall. In this instance the Windows firewall is more than adequate for anybody's need. Should you be using the internet via the means of a USB cable modem however, you will need more adequate protection. Again, free software is often more powerful, and safer, than paid software. ZoneAlarm by ZoneLabs is one of the better free Firewalls available to download. Simple to use, friendly layout and with a powerful heuristic approach to preventing system invasions. Let's not forget about Malware. This covers spyware and adware, many programs offer the ability to remove and prevent this nasty pieces of software, although most of them are malware themselves. The only one's worth recommending are Malwarebytes and SpyBot S&D. The latter is more powerful and only recommended for advanced users, the former easier to use but not as intensive. The choice is really up to you. All these pieces of software can be found through google searches and downloaded free of charge. I recommend looking into them. Save yourself money on software, and more importantly save money on cleaning or repairing your system. Above all else, when on the internet proceed with caution. Remember, if it looks too good to be true, it probably is.