Download

[sgrbrlnd]

During a download  the file is scanned  to detect a virus ?

[Eddy]

Depends on how you download and the settings in Avast.

[sgrbrlnd]

Depends on how you download and the settings in Avast.

....then not so easy . I download from a site when I need some software  or  to save a web page on the HD.  
 I've not done any settings till now.......

[Eddy]

on-access control panel > standard shield > customize > advanched > enable "scan created/modified files"

This will let Avast scan them.

[sgrbrlnd]

on-access control panel > standard shield > customize > advanched > enable "scan created/modified files"

This will let Avast scan them.

It's better to set ONLY  some extensions or all files ?

[Eddy]

The choice is yours

[sgrbrlnd]

Are there performance problems ?

[Lisandro]

Ok, your settings are correct  

Yes, some lack of performance as each file will be scanned while opened/changed/read  

[sgrbrlnd]

Thanks.
In  "scan file on Open"  what extension is better to type ( or copy /paste if it is possible...) ?

[Lisandro]

In  "scan file on Open"  what extension is better to type ( or copy /paste if it is possible...) ?

It won't help as the scanner, in Home version, will only scan the file 'as a text file', searching the strings of viruses.
You will better protected with a Script blocker application (see 'Links' on my signature) and adding ashquick.exe to your donwload manager. You won't have the lack of resources  

[sgrbrlnd]

You will better protected with a Script blocker application (see 'Links' on my signature) and adding ashquick.exe to your donwload manager. You won't have the lack of resources  

ashquick.exe can be  launched  from explorer menu .....
I use it  currently after having downloaded a file .....
But I thought of a tool that worked during the download and blocked it in case it detected a virus....
Then I have noscript.exe by Symantec .
Script blocker should be in the pro version.....
Regards.

[Lisandro]

But I thought of a tool that worked during the download and blocked it in case it detected a virus...

Set the sensibility to 'High' and standard shield could do the job.

Script blocker should be in the pro version.....

Yes, but there is a lot of free script blocker applications that could be used with avast.
See 'Links' on my signature for Script Sentry and Script Defender (best in my opinion): http://www.analogx.com  

[sgrbrlnd]

Set the sensibility to 'High' and standard shield could do the job.
 

Thanks a lot.

Yes, but there is a lot of free script blocker applications that could be used with avast.
See 'Links' on my signature for Script Sentry and Script Defender (best in my opinion): http://www.analogx.com  

I've uninstalled some month ago script defender because it doesn't work! I have WinMe. I had some little script *.vbs and *.js that worked very fine without being blocked !  
...while noscript.exe by Symantec  http://securityresponse.symantec.com/avcenter/venc/data/win.script.hosting.html    blocks  them (but block ONLY .vbs and .js extension ! )
Maybe it was only a my problem.............someone has really tested  this tool ?
Regards.

[Lisandro]

...while noscript.exe by Symantec  http://securityresponse.symantec.com/avcenter/venc/data/win.script.hosting.html    blocks  them (but block ONLY .vbs and .js extension ! )
Maybe it was only a my problem.............someone has really tested  this tool ?

Sorry, this is the first time I'm hearing about this tool...  

[DavidR]

Ditto, I have had no problems with Script Defender. I even added other file types to its list of intercepts.

All the program is doing is acting as a hand off to the program that would normally run the script, nothing special. It changes the file type associations for the file extension, so windows opens Script Defender (SD) and asks if it's OK, then SD passes the request to the correct program. So there is not much to go wrong.