From AT&T’s website:

AT&T Mobile Security (App required)

• Device security to help protect your data from mobile threats.
• Informs you about corporate data breaches.
• Provides important security reminders.

AT&T Call Protect

• Detects and blocks calls from likely fraudsters before they reach you.
• Labels potential nuisance calls from telemarketers, etc.
• Use the app to automatically send unknown callers to voicemail and block Spam Risk calls.