Summary:

• **What is Signal and Why It's Important**: Signal is a messaging app that helps keep your conversations private and safe from people who shouldn't see them. It uses special codes called encryption to scramble your messages so that only the person you're sending them to can read them.

• **Staying Safe in Group Chats**: When you use Signal to chat with groups of friends, you should be careful about who you add to the group and remember that group messages aren't as private as one-on-one messages. It's a good idea to only invite people you trust and to think before you share personal information in group chats.