1. Give your child more information than just the directive "Don't talk to strangers."
2. Explain simple rules for staying safe and reinforce those rules in positive ways on a regular basis.
3. Read books about strangers with your child and then talk about what you've read.
Check out these websites for more ideas on how to create guidelines for your family about strangers.
“Teaching Children to avoid Stranger Danger”
http://illinoisearlylearning.org/tips.htm
Talk to Your Child About Strangers
https://www.babycenter.com/0_how-to-talk-to-your-child-about-interacting-with-strangers_3657124.bc
Safety Apps for Parents
https://info.richmondalarm.com/news/13-safety-apps-that-parents-need-to-know-about