WAUWATOSA, Wis. (CBS 58) – Tuesday is “Safer Internet Day” across the nation.

Experts say it’s a time to make sure your children are being safe and smart on the internet. Wauwatosa Police believe the first step is having a conversation about what they’re doing on social media and websites.

It’s also important to make sure your kids know they shouldn’t be talking to anyone online who they don’t know in real life. Police say a common problem they see among teenagers on the internet is oversharing. Authorities say giving out too much information can lead to bullying and even danger.

“The other thing that occurs is just oversharing. Sharing information with people who they don’t know, about where they might be, who they are, where they go to school or sharing images that are inappropriate,” Wauwatosa Police School Resource Officer Joel Kutz said.

Kutz said it’s also important to remind children that once something is posted on the internet it’s there forever, even if they deleted it.