Combination of theft proof screws: 

https://www.brycefastener.com/?keyword=tamperproof&gclid=EAIaIQobChMIzauLx_ar5wIVWyCtBh1TXQwwEAAYASAAEgK-E_D_BwE

and locktite

https://www.amazon.com/Loctite-Threadlocker-Red-0-20-209741/dp/B000FP8EUS/ref=sr_1_1?keywords=loctite+red&qid=1580408067&s=hi&sr=1-1