Hi Nicole,
Yes, Microsoft values the partnerships we have with our customers and place great emphasis on protecting the privacy and security of customer data. All of Microsoft Office 365 Plans include same levels of security, but Office 365 E plan has more customize options. For example, E3 plan user can access and add rules in Forefront Online Protection for Exchange (FOPE) for Exchange Online, while P1 plan users can only view the settings in FOPE.
Thanks,
Bourne Zhang