OS:Windows Vista home premium (Japanese)32 bit.
Computer: Dell, XPS M1530.
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I have been using USB memory, SD/SDHCcards, External hard drives. I am also aware of the threat from USB memory/Flash memory. I always keep scanned computer and drives.

Last night when I inserted a USB memory in to the USB socket there was a message which was asking, Do you want to scan this removable drive? and another option was I think ignore or no(these were in Japanese). I did ran scan.

My question is, having this kind of message first time(not from anti virus software)is ok or it is a matter of concern?



The only new thing which I am doing since few days is whenever I use USB memory I first run anti virus soft. Could it be the reason of such message which I have talked above?

Please share your thoughts or advice.
Thank you

anti-virus soft is malware. You should run malwarebytes to try to detect and quarantine it.

Thank you for answer.

I already got Norton and it shows no problem. Ok I will check malwarebytes free version 14 days trial or Pro?
Thank you.
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"anti-virus soft is malware. You should run malwarebytes to try to detect and quarantine it."

Thank you for the download link.
I have downloaded. Is it ok to install Malwarebytes when Norton is already installed on computer. I hope Malwarebytes is a trustworthy software.

Thank you for details I appreciate it very much.
In Windows Vista it is not easy to make restore point. Some times it can and some times it could not. I will try and see.
What if I do not make restore point and install Malwarebytes and at later stage wanted to un-install, is it easily un-install?

Thank you for reply.
There isn't problem for me to make restore point it is vista, often it won't create restore point. I will try and see.