Exchange Online Advanced Threat Protection (ATP) is a new email filtering service that provides additional protection against specific types of advanced threats. ATP is currently in private preview and is expected to be available this summer as an optional service for Office 365 commercial customers.
ATP for Exchange Online will deliver the following benefits:
- Protection against unknown malware and viruses
- Real time, time-of-click protection against malicious URLs
- Rich reporting and URL trace capabilities
Read the full blog post here - http://blogs.office.com/2015/04/08/introducing-exchange-online-advanced-threat-protection/