![]() ![]() For a better understanding of this functionality, take a look at this official blog post from Microsoft. Microsoft also refers to this functionality as virtualization-based security. It does this by leveraging Hyper-V technology to run the operating system and then protect the cached credentials from residing in the guest OS by forming a virtual security bubble that allows protected and secure processes to reside outside of the context that would be accessible by an attacker. ![]() With Windows Server 2016 and Windows 10, Microsoft has introduced a mechanism called credential guard that allows Windows to place these hashed credentials into a protected set of memory that is not exposed to the operating system. Microsoft has increasingly realized with each version of Windows Server that administrative privileges are a really bad thing for an attacker to be able to take possession of for obvious reasons. If an attacker happens on to a workstation that has cached credentials of a domain administrator or a SQL DBA, this is the “Holy Grail” of credentials that allows unlimited access to the entire backend system, whether it be Active Directory or SQL Servers. Using tools that are readily available out on the Internet, an attacker can fairly easily dump the cached credentials from a workstation and use these to potentially gain access to sensitive infrastructure. In legacy versions of Windows, cached credentials get stored away on the system without a great deal of protection. This is often known as the “pass-the-hash” attack. One of the extremely common ways that attackers can move laterally and even vertically through a network is by capturing cached credentials. All it takes is an unsuspecting user and a vulnerability to be exploited to place an organization in a severely compromised position. Attackers are getting better at making phishing emails appear legitimate and from legitimate sources. While phishing is truly a traditional means of attack, it is frustratingly effective. These include browser scripts that can target vulnerabilities as well as the very archaic but still effective phishing emails. However, the same old tried and true mechanisms still work too well unfortunately. Attackers are getting more and more sophisticated in how they breach environments. There is perhaps not a more damaging event that can happen for a business today than to make headlines with having sensitive data breached. In this post, we will take a look at New Security Features found in Windows Server 2019 and how these build on top of current capabilities and take those a step further. Windows Server 2019 is set to be released later this year and contains some really great new security features that build on top of newer technologies that Microsoft introduced in Windows Server 2016 and Windows 10. Microsoft Windows Server is a staple in the enterprise datacenter and with Hyper-V hypervisor gaining traction in many spaces, it is becoming a major player in the virtualization space. There is nothing more central to most infrastructure today than the operating system. Vendors today are struggling to keep up with the security demands needed by customers in their environments. Security is discussed at basically all levels of infrastructure and network topologies up the entire OSI layer stack. ![]() I'm not convinced it is, but I'd like to get all of your opinions on this.Context - this is regarding a small HVAC comp.There is arguably no hotter topic in information technology today than security. ![]() Hey all,I got into a conversation recently regarding a small company and discussing if a non-ISP provided Firewall was really required.
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