Kids hang out on social media, and you can’t be there to fight off every creep. So speak to them openly: “I tell them why these apps can be dangerous,” says Christopher Hadnagy, CEO of consulting site Social-Engineer. Then toggle some safety settings (on their apps as well as yours).

Snapchat

Despite the self-destruct function, sexts still end up online. Quick fix: Minimize risks by restricting “Who Can Contact Me” to “My Friends” and blocking strangers.

Instagram

Even people without an account can view all your photos. Quick fix: Switch on “Private Account” in “Options.”

Kik

Though Kik is meant to be anonymous, kids post their usernames on other social media (#kikme), making it easy for weirdos to contact them. Quick fix: Don’t share usernames. Also, disable “Notify for New People” in “Notifications” so messages from strangers end up in a separate list.

Whisper

Used to post confessions or personal thoughts, Whisper claims to be anonymous, but geotagging gives away your whereabouts to undesirables. Quick fix: In your iPhone settings, change location access to “Never.”

Askfm

The question-and-answer service attracts cyberbullying (some incidents have been linked to suicides). Quick fix: Stay anonymous yourself but uncheck “Allow Anonymous Questions” in the privacy settings.

Omegle

Predators lurk in the shadows of this video-chatting service—which isn’t so anonymous once you link it to Facebook. Quick fix: Too gross. Don’t allow!