Experts haven't been completely taken with Kaspersky's firewall, but that's changed in Kaspersky Internet Security 2012. It's the only 2012 Internet security suite that garners an Excellent rating in Matousec.com's stringent firewall testing, and the defense holds up just as stoutly for other reviewers. Some critics want Kaspersky to stealth all open ports; if it doesn't, outside attackers can see your PC during scans. But even the staunchest of critics say the firewall is nearly impenetrable. The antivirus capabilities shine in testing, as well, although Kaspersky's anti-spyware chops aren't as effective as Norton Internet Security 2012's (*Est. $70).
Critics say they appreciate the clean, simple installation process and user interface, which has been overhauled compared to previous versions. Kaspersky Internet Security 2012 doesn't impair computer performance once your PC's up and running, but reviewers warn that it will slow down your boot time. Kaspersky's tech support outshines the paltry help available to users of Comodo Firewall, which reviewers name the most effective firewall. Kaspersky owners have access to support via an included user guide and an online knowledge base and forum; and they have official help via live chat, email, telephone and Kaspersky's social media accounts. For more information about the software, visit our Internet security suites report.
Matousec.com, PCMag.com and NotebookReview.com are the three best sources for Kaspersky Internet Security 2012 reviews. All three are highly regarded publications that conduct clearly defined, testing-based evaluations. TopTenReviews.com also contributes a lengthy review, albeit one with less transparent testing procedures.
Although Kaspersky Internet Security doesn't block 100 percent of the threats that Matousec.com throws its way -- as Comodo Firewall did -- it still manages to kill more than 90 percent of tested threats, making it the most effective 2012 security suite. By comparison, Norton Internet Security 2012 achieved only a 20 percent score. Kaspersky hasn't been evaluated using the newer, more difficult Proactive Security Challenge 64 testing methodology, however.
Review: Proactive Security Challenge, David Matousek
Kaspersky's antivirus capabilities aren't as effective in Neil J. Rubenking's tests as they are in testing from independent labs, but he has few bad things to say about its firewall. The firewall struggles to stop some spam and phishing, he notes.
Review: Kaspersky Internet Security 2012, Neil J. Rubenking, Aug. 15, 2011
NotebookReview.com's review of Kaspersky Internet Security 2012 isn't as long as PCMag.com's, but it does subject the software to a variety of security tests. Jeffries tests Kaspersky with PCFlank's Exploits Test, and the firewall blocks all attempts at penetration.
Review: Kaspersky Internet Security 2012 Review: Targeting Web Worries, Charles P. Jeffries, Nov. 7, 2011
Kaspersky Internet Security 2012 lands in the fourth slot in TopTenReview.com's list of the top firewalls; Comodo lands in the first. The website assigns high ratings to all aspects of the software. While Kaspersky might not stealth all ports completely, TopTenReviews.com reports that "Kaspersky Internet Security scans, filters, blocks and stealths in an acceptable manner" during tests with the Nmap Security Scanner tool.
Review: Kaspersky Internet Security 2012, Editors of TopTenReviews.com