Files have become read only

Hello Konrad,

We're unsure why the files change to read only.
Firstly, we can check whether the computer is infected or not.
Refer this article and perform the scan of your computer.
If it finds any threats, do resolve it.
Keep monitoring the files in C:\ drive and inform the status.

This began with a thumb drive and has extended into my C: drive.  Files and folders are becoming read only.  If I take away the read only flag, it will return in a couple days.  Is this a bug?

Hello Konrad,

We're unsure why the files change to read only.
Firstly, we can check whether the computer is infected or not.
Refer this article and perform the scan of your computer.
If it finds any threats, do resolve it.
Keep monitoring the files in C:\ drive and inform the status.