This extension was the cause of my Firefox start slowly and with disk 100% for few minutes. Deleted and all's good.

No way to disable the annoying "secure keyboard input is enabled" popup every time I click on a text field without totally disabling secure keyboard input. Just give me an option to not alert me of this every time, please.

Passou a causar travamentos no firefox, congelamentos esporádicos mas diários. Ocorre em todos os meus computadores. Permanece após restauração do firefox, limpeza de cache, cookies, etc. A única forma de parar os travamentos é removendo a extensão, precisei fazer isto em três computadores.

I've been having problems with heavy resource use on firefox, particularly of CPU. After checking individual exenstions I found that Kaspersky browser extension was the culprit and seriously hogs both RAM and CPU. Turning it off solves the resource problem.
As I have full (paid for!!!!) Kaspersky suite installed I'm not sure what the logic is of having to instal another app to manage browsing for the same product.
I think the developers need to look at this issue.

Ребята, пошевелитесь уже, расширение невероятно грузит процессор. Ау!

Your protection on the Internet with extension from Kaspersky Lab
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Extension Metadata
Used by

551,945
Users

2,831
Reviews

Rated 4.6 out of 5
4.6 Stars

Keeps reinstalling itself!