First to review Kaspersky. Surprised nobody has left a review here. Thought they were huge. Good anti virus software. So many options out there but they are simply and easy to use and running it won't slow down your PC. No complaints. Date of experience: June 13, 2013Purchased service for one year only but the company repeatedly charged my credit card, saying it was automatic renewal. Even after filing a dispute, and getting the charge reversed, they charged my card again. As a last resort, I had to have a new credit card issued. Calling the company is futile because the customer service agent's have a difficult time communicating. Date of experience: March 4, 2017Karspersky for Internet Security is a great software for desktops and I have been using it for several years. However, it turned out to be a disaster for my android phone Nexus 5. I installed the Mobile version of Android phone. The phone became locked and spent a great deal of time to get into it. It behaved erratic. It could not be swiped and many important functions became inaccessible. I tried factory reset which failed after many attempts. Perhaps some problems with the re-boot files or something like that. Tried to get help from Karpersky Help desk. Not helpful at all. You asked question A and they reply for B. Seems they don't read email properly, and don't know the answers. Any way, the phone is now a piece of garbage and I have a get a new phone. Tip for consumers:Install the Mobile version Kaspersky Internet Security for Android at your own great risk. My phone was destroyed. Service Value Quality Date of experience: February 5, 2017One of the best antivirus used by the most of the laptop and desktop holders for keeping their laptop and desktop in a safe manner i. E., in a safe protection from virus and firewall problems which will be a best and user friendly anti virus software Date of experience: September 22, 2014Being an open-minded person I realize that no software can be compared to the Kaspersky antivirus, because they use only cutting-edge technologies to amplify their antivirus helping it handle with almost all malicious software. Once I had a miner on the PC, and only their anti-ransomware tool has helped me to clean up the PC. It's worth noting that miner has blocked standard Windows defender, and I couldn't use it. But I ain't need it anymore with Kaspersky, lol. Quality Date of experience: January 2, 2024I used many antiviruses and this one is one of the best, check for yourself Date of experience: January 28, 2016