Kaspersky Internet Security has always been popular for its functionality and general reliability. This online protection solution is regularly supported and updated so that it never becomes obsolete or useless.
I find it very appealing that the developers don't pretend to give you anything they can't provide. Kaspersky Internet Security openly shares basic functionality, design and interface with its regular counterpart, Kaspersky Antivirus. However, instead of pretending to be something completely different while having the same features, this software actually does something new. The scanning and threat elimination works as usual, but the firewall has been seriously buffed up, and the program even goes deeper into boot protection, starting processes very early on so that no threats slips past the defense. Resulting level of protection is basically the best in the market by most accounts, and Kaspersky's effectiveness has become self-evident long ago.
Kaspersky Internet Security has extended functionality going beyond a standard antivirus. It includes a great spam filter working with email accounts and links, said filter can be easily integrated with Outlook. But special elements like Safe Money are what sells this software for me. Safe Money basically protects your financial information by opening specific sites where such information is included in Kaspersky's special protected browser, avoiding exposure to unsafe online elements. There are also scanners for exposed traces of computer use and unsafe browser and system settings, virtual keyboard, bootable Rescue Disk creation tool and several more handy features that add to the overall experience.
Kaspersky Internet Security is a program that is ever-growing and ever-improving. That's why it's my personal favorite, and that's why this review is so glowing. Of course, the program has a couple of minor flaws, but those are largely just small annoyances, like the constant reminders or sometimes over-protective scanning identifying perfectly normal files as threats. But those are so minor that taking them seriously would be petty. Overall, Kaspersky Internet Security is as good as it gets.