I have very unpleasant consequences of using a few times, on a Windows 10 computer, Avast Secure Browser for some financial transactions on the internet. WITHOUT ANY PROMPTING OR ASKING FOR PERMISSION, ASB has spread to other files on my computer and has practically taken it over, imposing Windows Security settings and changing i.a. my pictures into html files, so I have now a few thousand pictures with the Avast yellow padlock, which do present themselves as html files, In the result, if in order to open them I use My Computer, it tries to open them with browsers. Fortunately, I am still able to open them if I use image processing software rather than My Computer. Ever more serious problems have been caused with my documents. I am now investigating, how extensive it is, but I can already see that while I am able to edit access permissions on some of MY documents, in approximately 80% (!!!) I am unsuccessful. If I am unable to access MY OWN documents, because of the havoc created by ASB on my computer in files having absolutely nothing to do with browsing, this is not a joking matter, so I expect from Avast an effective assistance in sorting this out and preventing such malicious spread of this software, which, ostensibly, is to be used for browsing only but behaves as aggressive malware. Trust me, I will not stay limited with this message to the Avast forum only! Incidentally, I tried to pub this message on Avast community forum but I was unable to do it, because I couldn't contact a moderator. Mariusz Kuklinski [protected]@gmail.com (Keep my personal details private, please)