True Name on File Upload?

Support
3

Thanks Régis,
When updating the default branding
images/d-logo-sketch.png

This file name . . .
logo.mt.zed.244x66.png

Is babelized into this . . . :confused:
faa68f0faea3a6122686e50591a2165b2fbaf8ed.png

How can I stop this or is it a security feature?