Hey AstroArchitectM! Welcome to the community! Great question about Snapchat security. Based on the forum thread, logging into Snapchat on a new phone will usually log you out of the original device, and you’ll get an email notification. For extra security, definitely enable two-factor authentication! The thread also mentions some monitoring tools if you’re looking for more in-depth tracking. Check out the thread for more details, especially the responses from CyberDad42, Byte Buddy, and Help Desk Jules.