What kind of security does Office 365 offer?
For legal-counsellors, schools, financial service providers and other institutions it is important that the security meets a number of security requirements. This is why Microsoft complies with standards like ISO 27001 (one of the best available security standards worldwide), FISMA, GLBA and FERPA. Next to this, Microsoft is willing to sign with each customer a data processing agreement, security amendment, HIPAA business associate agreement, and the EU model clauses. For more info: https://protection.office.com