James Robinson | MVP

Security folk - You starting to realise that Device Management needs to be part of Security, yet?

Reduce your Intune Admins and use intune rbac and restricted admin units. Segregate device management into groups to decrease the blast radius. Treat Intune Admins like Global Admins. Require PIM with approvals. I've been saying this since before it was popular. As unpopular as this may sound right now, Microsoft is not to blame. They wrote about how to do all this in their documentation, but nobody does it. You have to keep in mind that it could have been a Global Admin too. In that case, the situation is even more dire. The vast majority of orgs are still hybrid. If the compromise was of the on-prem AD, not much you can do because you can pivot to an Intune Admin's device and use the APIs. This is why your EDR should be throwing high alerts when admin machines stop checking in and you should validate visibility on those machines. Managing admin machines is really really hard. Admins write code, run scripts, and look like they are compromised all the time when they're not.

If you use a personal phone/laptop for your work, pay very close attention to this little detail. Iran attackers wipe 200k devices at a company called Stryker. Within those devices appears to be employees PERSONAL devices. The attackers used the company’s MDM software, which is basically IT management software running on everything. It’s an incredibly attractive backdoor to an attacker. I successfully targeted MDM software for several Red Team engagements. It’s… lots of fun :) Anyway, a lot of companies require you to install their MDM software on your personal devices before you can access resources like Corp email. It’s used to keep devices updated, lock things down if they get stolen, etc. The company often promises that they won’t access personal data, erase any personal data, etc. But this is often ONLY POLICY. If a bad actor gains access to the MDM tool, as was the case here, then anything can happen. People should be aware of these risks. I refused to run MDM software on any of my personal devices. The company needs to provide me with hardware if they want that. I personally isolate all corp devices to their own network too. If an adversary can get into the corp laptop, then can then get inside my network… there have been cases of it happening in the past.

If you use a personal phone/laptop for your work, pay very close attention to this little detail. Iran attackers wipe 200k devices at a company called Stryker. Within those devices appears to be employees PERSONAL devices. The attackers used the company’s MDM software, which is basically IT management software running on everything. It’s an incredibly attractive backdoor to an attacker. I successfully targeted MDM software for several Red Team engagements. It’s… lots of fun :) Anyway, a lot of companies require you to install their MDM software on your personal devices before you can access resources like Corp email. It’s used to keep devices updated, lock things down if they get stolen, etc. The company often promises that they won’t access personal data, erase any personal data, etc. But this is often ONLY POLICY. If a bad actor gains access to the MDM tool, as was the case here, then anything can happen. People should be aware of these risks. I refused to run MDM software on any of my personal devices. The company needs to provide me with hardware if they want that. I personally isolate all corp devices to their own network too. If an adversary can get into the corp laptop, then can then get inside my network… there have been cases of it happening in the past.