3D printing and safety concerns; can you trust that design?

https://techcrunch.com/2016/10/21/researchers-sabotage-3d-printer-files-to-destroy-a-drone/

"Researchers at Ben-Gurion University of the Negev (BGU), the University of South Alabama, and Singapore University of Technology and Design have successfully injected malicious code into a computer which, in turn, added invisible commands to a file containing a 3D model of a drone propeller. When they printed the model and attached it to the drone, the propeller broke upon take-off. This killed the drone.
In short, the exploit, codenamed Dr0wned, was able to modify a digital file that, in turn, destroyed a physical device."

well darn.   This has larger implications of course, but the moral must be; 1) keep your computer secure and don't open files that you aren't 100% sure of, and 2) test your equipment.