Sunday, December 3, 2023
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ransomware

Microsoft Secure 

Automatic disruption of human-operated attacks through containment of compromised user accounts

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User containment is a unique and innovative defense mechanism that stops human-operated attacks in their tracks. We’ve added user containment to the automatic attack disruption capability in Microsoft Defender for Endpoint. User containment is automatically triggered by high-fidelity signals and limits attackers’ ability to move laterally within a network regardless of the compromised account’s Active Directory state or privilege level.
The post Automatic disruption of human-operated attacks through containment of compromised user accounts appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure 

Microsoft Purview data security mitigations for BazaCall and other human-operated data exfiltration attacks

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Microsoft Defender is our toolset for prevention and mitigation of data exfiltration and ransomware attacks. Microsoft Purview data security offers important mitigations as well and should be used as part of a defense-in-depth strategy.
The post Microsoft Purview data security mitigations for BazaCall and other human-operated data exfiltration attacks appeared first on Microsoft Security Blog. READ MORE HERE…

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Networkworld 

VMware ESXi server ransomware evolves, after recovery script released

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After the FBI and the Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday released a recovery script for organizations affected by a massive ransomware attack targeting VMWare ESXi servers worldwide, reports surfaced that the malware evolved in a way that made earlier recovery procedures ineffective.The attacks, aimed at VMware’s ESXi bare metal hypervisor, were first made public February 3 by the French Computer Emergency Response Team (CERT-FR), and target ESXi instances running older versions of the software, or those that have not been patched to current standards. Some 3,800 servers have been affected globally, CISA and the FBI said.To read this article in full, please click here READ MORE HERE…

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Microsoft Secure 

Unraveling the techniques of Mac ransomware

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Understanding how Mac ransomware works is critical in protecting today’s hybrid environments. We analyzed several known Mac ransomware families and highlighted these families’ techniques, which defenders can study further to prevent attacks.
The post Unraveling the techniques of Mac ransomware appeared first on Microsoft Security Blog. READ MORE HERE…

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Networkworld 

Ransomware attack knocks Rackspace’s Exchange servers offline

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Cloud services and hosting provider Rackspace Technology acknowledged Tuesday that a recent incident that took most of its Hosted Exchange email server business offline was the product of a ransomware attack. The company shut the service down last Friday.It was not, initially, clear what had caused the outage, but Rackspace quickly moved to shift Exchange customers over to Microsoft 365, as this part of the company’s infrastructure was apparently unaffected.Rackpsace offers migration to Microsoft 365
Rackspace said today that there is “no timeline” for a restoration of Exchange service, but it is offering Exchange users technical assistance and free access to Microsoft 365 as a substitute, though it acknowledged that migration is unlikely to be a simple process for every user. Rackspace said that, while the migration is in progress, customers can forward email sent to their Hosted Exchange inboxes to an external server, as a temporary workaround.To read this article in full, please click here READ MORE HERE…

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Microsoft Secure 

DEV-0569 finds new ways to deliver Royal ransomware, various payloads

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DEV-0569’s recent activity shows their reliance on malvertising and phishing in delivering malicious payloads. The group’s changes and updates in delivery and payload led to distribution of info stealers and Royal ransomware.
The post DEV-0569 finds new ways to deliver Royal ransomware, various payloads appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure 

Stopping C2 communications in human-operated ransomware through network protection

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Providing advanced protection against increasingly sophisticated human-operated ransomware, Microsoft Defender for Endpoint’s network protection leverages threat intelligence and machine learning to block command-and-control (C2) communications.
The post Stopping C2 communications in human-operated ransomware through network protection appeared first on Microsoft Security Blog. READ MORE HERE…

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