A rabbi at a shul I shuli go to mentioned something about how to have true protection. He said while we need to do our histadlus and have a security guard (which our shul has),
We also need to remember where our protection comes from, Hashem. A big schus for protection is Not talking in shul . This is definitely something we can acheive. May the Geula sheleimah come soon
schus in Hebrew is cartilage.