A "safety threat" refers to anything that puts the safety or well-being of people at risk. It indicates a potential danger or harmful situation that could cause harm, injury, or damage. Full definition
It is not clear whether the fragments, which can be used for vaccine development, represented a serious safety threat. (sciencemag.org)
But one of the biggest changes to online safety threats in the last 12 months has been the «live» broadcasting environment. (qaeducation.co.uk)
Schools can send an audible alert to every classroom instantly, so staff and students will immediately know of any significant safety threat. (schoolwebmasters.com)