Krypton hijacked?

I was looking through the Thumbnails for Kodi Krypton and I noticed that several of my private pictures were copied from the original directory into the Thumbnails directory.
Some pictures were combined in a group of four.
When I checked my pictures directory I discovered that my original sources had been deleted. Fortunately I had copies at a different location.
I use Windows 10, I am protected with a virus program and a malware program, both are scanning my computer on a daily basis.
I downloaded Krypton from the original Kodi site.
I can’t believe that this is intentionally done by the programmers, so maybe the site and the program was hacked by enemies of Kodi?
Anyone else discovered this problem, or am I the only one, victim of some other mysterious program.

Sad