Unexpected messages sent from your account
Unknown devices linked in WhatsApp Web or Linked Devices
Logged out of your account without reason
Verification code requests you did not make
Profile photo, name, or about info changed without you
New chats, groups, or archived chats you did not create
Messages marked read or deleted without your action
Contacts report strange messages from you
WhatsApp settings changed without your permission
Calls made or received that you do not recognize
Battery or data usage unusually high
Security notifications from WhatsApp about a new login
Your phone receives SMS codes you did not request
You cannot access your account after a code was used elsewhere