Cyberattacks on Microsoft 365 are increasing in volume and sophistication, outpacing the capabilities of native tools. While Microsoft ensures service uptime, protecting your data is your responsibility. Using built-in features like retention policies or recycle bins leaves critical data exposed to ransomware, insider threats, and accidental deletions. This whitepaper highlights common misconceptions, the limitations of native protection, and why a multi-layered cyber resilience strategy is essential.