Microsoft recently updated Mail Protection Reports for Office 365 (v15.0.604.001). This version now supports (and requires) Excel 2013.
Microsoft Office 365 Excel Plugin for Exchange Online Reporting
This reporting workbook provides you with a detailed view into the email protection reports that are available in the Office 365 Reporting dashboard. This workbook is available to all Exchange Online and Exchange Online Protection customers. This workbook connects to the reporting web service. After you install and configure it, you can refresh the data from within the workbook at any time. You can drill through from recent summary data to the underlying detailed information.
Supported operating systems: Windows 7, Windows 8, Windows Server 2008
Microsoft Office Excel 2013
1. Microsoft .NET Framework 4.5
2. Microsoft Online Services Sign-In Assistant (for Exchange Online Protection customers only)
3. An Office 365 subscription that contains Exchange Online or Exchange Online Protection
4. Email address you use to sign in to Office 365