Preventing Downloads from Unmanaged Devices in O365
projectblack.io | research | #cloud | #data-exfiltration | #office-365 | #defender-for-cloud-apps | #user-agent | #bypass
Summary
Defender for Cloud Apps' download blocking is bypassable with magic user-agent strings; the post demonstrates the bypass and recommends native download restrictions in Outlook and SharePoint.
- Published
- Collected
--- id: 3722 title: "Preventing Downloads from Unmanaged Devices in O365" source_domain: projectblack.io source_url: "https://projectblack.io/blog/preventing-downloads-from-unmanaged-devices/" published_at: "2026-02-24 22:19" tags: ["cloud", "data-exfiltration", "office-365", "defender-for-cloud-apps", "user-agent", "bypass"] phying_url: "https://phying.com/item/3722" lang: en --- # Preventing Downloads from Unmanaged Devices in O365 ## Summary Defender for Cloud Apps' download blocking is bypassable with magic user-agent strings; the post demonstrates the bypass and recommends native download restrictions in Outlook and SharePoint. ## Intelligence Metadata - **Sources:** projectblack.io - **Published:** 2026-02-24 22:19 - **Original:** https://projectblack.io/blog/preventing-downloads-from-unmanaged-devices/ - **Phying News:** https://phying.com/item/3722