Jared is a system engineer for an import distribution company that has employees in offices in Europe, Asia, and the United States. All the company's mobile devices are registered in Microsoft Azure Active Directory (Azure AD) and enrolled in Microsoft Intune.
These devices include the following platforms.
Microsoft Windows 10
Android Enterprise
Apple iPadOS
Jared is in the process of combining Microsoft Defender ATP with Intune to add a strong security solution for these mobile devices. He's already completed the following.
Verified that all the mobile devices are joined to Azure Active Directory
Verified that all the mobile devices are enrolled in Microsoft Intune
Connected his Microsoft Defender ATP subscription with Intune
Onboarded the mobile devices to Microsoft Defender ATP using a configuration profile
Configured a security policy
After a few weeks, a sales representative in the Paris office sends an email to Jared. He complains that he's being blocked from accessing the business contracts for his customers. During the email thread between Jared and the sales rep, Jared discovers that the sales rep opened a suspicious email attachment, and his laptop is now infected with a Trojan horse.
Which of the following is the MOST likely reason for the sales rep not being able to access the customer business contracts?