What action is taken if Defender reports a compromised device?

When a Defender reports a compromised device, preventing access to an application is a critical security measure. This action helps protect the organization's resources and data from potential harm that could arise from vulnerabilities on the compromised device. By restricting access, the organization can mitigate risks such as data breaches, unauthorized data access, and lateral movement by potential attackers.

The aim of this security response is to maintain the integrity and confidentiality of sensitive information and resources. This precaution ensures that even if one device is compromised, the rest of the network remains secure until the issue is resolved or the device is remediated. Thus, preventing access serves as an essential layer of defense within the broader cybersecurity strategy.