Deleting files or emailįiles in SharePoint and OneDrive for Business are protected by: For more information, see Encryption and key management overview. An attacker without any valid user account credentials would have to decrypt the data at rest that has been encrypted by Microsoft 365 default and enhanced encryption. For more details about how Microsoft protects customer data, Malware and ransomware protection in Microsoft 365.Ī ransomware attack on a Microsoft 365 tenant assumes that the attacker has valid user account credentials for a tenant and has access to all of the files and resources that are permitted to the user account. The following sections provide a summary. However, Microsoft 365 online services have many built-in capabilities and controls to protect customer data from ransomware attacks. Copying files outside your tenant (data exfiltration).Ransomware mitigation and recovery capabilities provided with Microsoft 365Ī ransomware attacker that has infiltrated a Microsoft 365 tenant can hold your organization for ransom by: You own your data and identities and the responsibility for protecting them, the security of your on-premises resources, and the security of cloud components you control.īy combining these capabilities and responsibilities, we can provide the best protection against a ransomware attack.Microsoft provides you security controls and capabilities to help you protect your data and applications. Microsoft cloud services are built on a foundation of trust and security.The security of your Microsoft cloud services is a partnership between you and Microsoft: For more information, see Encryption and key management overview.įor more information about ransomware protection across Microsoft products, see these additional ransomware resources. Unlike commodity ransomware, human-operated ransomware can continue to threaten businesses operations after the initial ransom request.Ī ransomware attack on a Microsoft 365 tenant assumes that the attacker has valid user account credentials for a tenant and has access to all of the files and resources that are permitted to the user account. Human-operated ransomware can also be used to shut down critical machines or processes, such as those needed for industrial production, bringing normal business operations to a halt until the ransom is paid and the damage is corrected, or the organization remediates the damage themselves.Ī human-operated ransomware attack can be catastrophic to businesses of all sizes and is difficult to clean up, requiring complete adversary eviction to protect against future attacks. Once the attack is complete, an attacker demands money from victims in exchange for the deleted files, decryption keys for encrypted files, or a promise not to release sensitive data to the dark web or the public internet.
Human-operated ransomware is the result of an active attack by cybercriminals that infiltrate an organization’s on-premises or cloud IT infrastructure, elevate their privileges, and deploy ransomware to critical data. Commodity ransomware typically spreads like a virus that infects devices and only requires malware remediation. Ransomware is a type of extortion attack that destroys or encrypts files and folders, preventing access to critical data.
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