по соображениям безопасности

out of safety concerns (dailycaller.com/2017/01/16/liberal-rhode-island-town-bans-solar-power-out-of-safety-concerns/ Tanya Gesse); on security grounds (denghu); for security reasons (Alexander Matytsin); on safety concerns (In the wake of the disaster at the Fukushima nuclear plant in Japan in 2011 there has been a steady reduction in demand for uranium as countries turned away from nuclear power on safety concerns. aldrignedigen)

autom.

due to safety reasons (translator911)

clich.

over security concerns (The federal government is banning two apps from its phones over security concerns. (CityNews 1130) ART Vancouver)

math.

for safety reasons

milit.

for reasons of security

offic.

due to security reasons (Alex_Odeychuk)

serv.

on considerations of security (defense.gov Alex_Odeychuk)