Yesterday, Microsoft announced a new capability in Exchange Online which adds the ‘SessionID’-field to the existing audit logs in Exchange Online. Audit logs are a useful feature to go through and look at what actions have been performed on a mailbox at...
Recently, I attended the Thrive Conference in Ljubljana, Slovenia. During the IT Pro “Ask the Experts”-panel, an interesting question was raised: “How do I protect an on-premises AD FS environment from password spray attacks?”. Why is this such an interesting (and...
Update 21/03/2018: Microsoft have dialed back on how quickly messages are marked as spoofed and, thus, moved to the Junk E-Mail folder. However, the guidance is to still properly implement SPF/DKIM/DMARC to be future proof. After all, at some point in the (near)...
Office 365 provides various authentication options, such as cloud-IDs, Password Hash Synchronization or federated identities. Leaving out the specifics on how each of these options work, all of them are configured per domain. Whenever trying to access services in...
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