sorry for my bad English
I have 1 more question
usually, how long will the viruses updated since a user send them to avast lab?
i have been waiting for 1 day
Depends on their priority. Malware in the wild, quickly spreading in the Internet, will be added earlier. False positives are corrected as soon as possible, on next virus database update. Specific malware could take more time. But, indeed, there are times we wait
a lot to see a detection... some days.