Answer:
For me, by NOT TELLING anyone your private information especially to your social media accounts (if you have on, of course) even if it's your dearest friend because you might not know if he or she is one of the hackers that has a bad thing to do at you, plus why tell them your private infos without any reason tho? Also by NOT TRUSTING EASILY to someone who you may not know because you don't know on what's in his or her mind and that could help you prevent of knowing some bad people doing bad stuff especially the "HACKERS".