According to Microsoft, Office 365 is compliant with world-class industry security standards, including ISO 27001, EU Model clauses, HIPAA BAA, and FISMA. You can control permissions, versioning, and manage records to manage, control, and retrieve your documents in one place. However, Office 365 has experienced outages in the past, like the one on April 6, 2018, that affected users worldwide. Although Microsoft fixed the problem on the same day, this shows that lawyers have a part to play in ensuring the software they use is securely implemented.