Avast License is Leaking

I always bought my Avast software license from website or official reseller. But somehow, my license is leaking and perhaps used by other people that I don’t know.

I bought Avast Driver License this year for my old notebook through my account on Avast website.

It was around April this year. The process was like what it was used to be. And I have no complain of anything.

This week, I looked at my account and subscriptions page, and found that my license was used on other three unknown devices, and today it became four unknown devices.

I never share the license, even with my own family members, and only used it in one device. So, who use this license on other devices? And how can they get it?

Also, I found this issue is not particularly an isolated case. There was other user with similar experience on the forum.

I suggest, Avast should give more control over user on which devices they want their license to put into.

Or, if Avast allow a single license used in multiple devices, should I use it on other devices too? ~(=^‥^)ノ