The program is dated resource hog. I have a high-end specs gaming desktop I use for work but nevertheless, ZA makes it suffer. I have used ZA since 2009, but this is becoming ridiculous. UI design is super dated and hasn't been updated since 2012, despite users begging for years for optimisation and change. Stay away!

Zone alarm melts your PC Zone alarm used to be great 10 years ago. I installed it recently because I was tired of Comodo interfering with other programs and me having to disable it regularly to play some games... When i installed ZoneAlarm i was satisfied initially. It does fulfill it's function. However, it somehow manages to make my PC suffer more than a UltraHD FPS. I was having issues with lag everytime I open Firefox because it seems to analyse every bite that comes through, in other words it's extremely unefficient. The breaking point was 5min ago when I got a Blue Screen Of Death because of it. NEVER AGAIN

a while ago i stupidly possibly ticked… a while ago i stupidly possibly ticked a box for auto-renew. Can I get through to cancel... no way. User name/password reset does not work. I cannot find a way to block payment via Paypal. Current "summer offers " are cheaper than renewal options. A right nightmare of a company . Have used Sophos without issue

Do NOT install if you watch any online videos If you watch any online videos, to include YouTube, please DO NOT install ZoneAlarm. My laptop isn't fast (1.86Ghz to be exact), but I was able to watch any online videos without interruption before I installed ZoneAlarm. I did not think it was Zone Alarm that caused the issue, after all, it was only an antivirus software. I deleted Zone Alarm to test it out, and instantly, after a reboot, I was able to watch videos without interruption. The speed felt rejuvenated to youth again. Thank goodness I didn't pay for a year subscription.

Once respected, now Malware! Used to be a respected name for security stuff buy now it takes hold of your PC and hides parts of it making it nigh on impossible to remove even after using their 'Cleanup' tool. Still interferes with browsing.