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SMB authentication rate limiter now on by default in Windows Insider

SMB authentication rate limiter now on by default in Windows Insider

Heya folks, Ned here again. Back in the spring of 2022 we released a new SMB preview feature: the SMB authentication rate limiter. It is available in Windows 11 Insider and Windows Server Insider builds. IT staff often enable access to the SMB server service ... continue reading
An organizational chart of the different threat actors that worked together in attacking the Albanian government. The top level mentions Iran's Ministry of Intelligence and Security as the sponsor organization. A table on the left side lists down the threat actor group names and their corresponding aliases.

Microsoft investigates Iranian attacks against the Albanian government

Shortly after the destructive cyberattacks against the Albanian government in mid-July, the Microsoft Detection and Response Team (DART) was engaged by the Albanian government to lead an investigation into the attacks. At the time of the attacks and our engagement ... continue reading
Infection chain describing the usual tactics and techniques used by DEV-0270 actor group.

Profiling DEV-0270: PHOSPHORUS’ ransomware operations

Microsoft threat intelligence teams have been tracking multiple ransomware campaigns and have tied these attacks to DEV-0270, also known as Nemesis Kitten, a sub-group of Iranian actor PHOSPHORUS. Microsoft assesses with moderate confidence that DEV-0270 conducts malicious network operations, including ... continue reading
NIC Certification updates in the Windows Server Catalog

NIC Certification updates in the Windows Server Catalog

Hi Everybody - Dan Cuomo, Principal PM on the Azure Edge and Platform, Core Networking team, here to talk about some changes we're making to NIC certification in the Windows Server Catalog. During OS deployment (and periodically after that), you ... continue reading
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Domain Join a Storage Account Leveraging Azure Automation

Are you looking to take the next step in your cloud journey and pivot away from managing file servers? Why not look at Azure Files! In short; Azure Files offers fully managed file shares in the cloud that are accessible ... continue reading
SMB compression behavior & settings changes

SMB compression behavior & settings changes

Heya folks, Ned here again. As you know from a previous post, we released an end-to-end SMB compression capability with Windows 11 and Windows Server 2022. You can learn all about it at SMB Compression | Microsoft Docs.    There was ... continue reading
Screenshot of a Sliver implant configuration data extracted from the process memory of a Sliver backdoor.

Looking for the ‘Sliver’ lining: Hunting for emerging command-and-control frameworks

Microsoft has observed the Sliver command-and-control (C2) framework now being adopted and integrated in intrusion campaigns by nation-state threat actors, cybercrime groups directly supporting ransomware and extortion, and other threat actors to evade detection. We’ve seen these actors use Sliver ... continue reading
Network ATC: What's coming in Azure Stack HCI 22H2

Network ATC: What's coming in Azure Stack HCI 22H2

When we first released Network ATC, we greatly simplified the deployment and on-going management of host networking in Azure Stack HCI. Whether it was the simple yet powerful deployment experience, a “that was easy” cluster expansion process, or increased reliability ... continue reading

How one Microsoft product manager acts as champion for identity security

A technology career embodies the ancient Roman saying that “luck happens when preparation meets opportunity.” Few industries are as dynamic, fast-paced, or intense as technology. With so many challenges to solve, opportunities are everywhere, but as I’ve learned myself through ... continue reading
A screenshot of code with a list of process creation callbacks invoked from the syscall NtCreateUserProcess.

Using process creation properties to catch evasion techniques

We developed a robust detection method in Microsoft Defender for Endpoint that can catch known and unknown variations of a process execution class used by attackers to evade detection. This class of stealthy execution techniques breaks some assumptions made by ... continue reading