Category: Exchange

Do’s and don’t concerning security for Identity part 1

In simplified terms there is two different ways to build a cloud service. Cloud-based or Cloud native Hybrid There is also different possibilities to federate Identities between Cloud service providers but also with Federation services through on-premises environment. Azure AD…

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2022 H1 Cumulative Updates for Exchange Server

What was released? With 2022 H1 there came some significant update to how You manage and license your Exchange-servers in a Hybrid setup. Exchange Management Tools Update You don’t anymore need Exchange Server for management purposes (Management Hybrid) you can…

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Azure AD Connect 2.0.89.0 – How to un-break your Exchange Hybrid

AAD Connect v.2.0.88.0 came just a week ago and it had an ugly bug. What’s wrong? All the user that will be disabled in Exchange Hybrid environments will have their mailboxes deleted from the cloud. Shared Mailboxes had a long…

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Moving from SfB Hybrid to Teams-only

Time to move from On-premises Hybrid to the cloud. What it takes and what could be the problems with the process? End of Life for On-premises versions Skype for Business 2015 mainstream end date was October 13, 2020. However, the…

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Autodiscover redirect leakage

** This doesn’t concern Exchange Online in any way, only on-premise versions ** Today Guaricore lab team discovered on-premises Exchange autodiscover vulnerability. I want to call my blog post “Autodiscovering the Great Leak” but that seems like too much as…

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Using attack simulator for user education and gather insights.

This is part 2 of compliance and user governance. Here is part 1. Attack simulator is a tool for educating users and gathering insights on what they do wrong or right. Who can use it? If your organization has Microsoft…

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Exchange and hybrid identity

Hi again, Now to my all-time favorite topic, Exchange covered with identity and security. How many times have see the error above when running HCW as an Exchange admin, I bet many and we will get to this later on….

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Identity is the new perimeter and why information protection matters.

Your identity, identification or credit card is important, don’t loose them and don’t take it lightly. Even if talking about social security number or just your email. Both can be hijacked and used for purposes you don’t want. How you…

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Exchange Modern public folders and how-to cope with them.

With Exchange Hybrid public folders there is two options, either Legacy or Modern. You always have to migrate them to the cloud either thru Exchange Hybrid (13,16 and 19) and Exchange Hybrid (10) or with Third-party tools. If You have…

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