As I have mentioned in question title, almost all websites I have created for my clients in last years are suddenly infected with "JS/TrojanDownloader.Agent
Before few years ago I stared my own business and have firm which main business is graphic design and creating websites. On my own web site, before few weeks I added category "clients" which contained list of my clients which I worked for (there was just list of names for example: Client 1, Client2, Client3 etc - there was no links, no URL, no additional info..)
Yesterday I tryed to enter Internet address one of my clients in address bar, but as I entered the address site was unavaliable and in firefox I get this error message:
"The connection was reset
The connection to the server was reset while the page was loading.
* The site could be temporarily unavailable or too busy. Try again in a few
* If you are unable to load any pages, check your computer's network
* If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web."
and also security solution I use ("ESET Smart security") showed me this warning message in same momment:
"!ESET Smart security
Connection terminated - quarantied"
That was the case with first client site, but then I also tryed to open other sites which I created for my clients and I get same error messages. When I open any other site which is not one my clients websites its working fine so its look like someone wanted to intentionally harm me/my business (probably one of my competitiors or someone just for fun). My guess is whoever done this, he probably used list of my clients names on my site under "clients".
So I need help fast, I need to know how to solve this and how to prevent not to happen ever again.
Any help is appreciated and MANY THANKS in advance for PROMT replys!