In Atlantis, talk to Medea.

Show Quest Info

Introduction

As you collect treasure, greedy bandits may try to destroy or steal your rare gear and pets. To protect your bag, the Magic Academy has developed a tiny magic seal that can prevent your items from being stolen. Click the lock icon next to your class name at the top-left corner of the window to open the Safety Lock, which can let you set a password for opening your Stash, removing items, and trading. You'll need to enter the password to do these things each time you log in. Try it out!

NPC Dialog

Have you found that as you accumulate more rare treasure, unscrupulous fellows are eyeing your bag in hopes of stealing or destroying your valuables? I can show you how to use the Safety Lock to protect yourself. Click the lock icon in the top-left corner to set a password and try it out!

Quest Completion

Once you've set the lock, you can remove it again later if you don't need it, as well as change your password. Don't forget, though, that it takes seven days to remove the lock.