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Security in Context: The BeyondTrust Blog

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Bringing you news and commentary on solutions and strategies for protecting critical IT infrastructure in the context of your business.

EMET 4.0: Adding a Layer to the Security Onion

Posted June 19, 2013    BeyondTrust Research Team

With the release of the EMET 4.0 beta back in April, it’s no surprise that there has been a lot of buzz lately around Microsoft’s Enhanced Mitigation Experience Toolkit (EMET). Now, after some delay, the beta testing is over and the brand new, and very shiny, EMET v4 has been released.

The latest version of EMET introduces several features that address many of the techniques used in high profile attacks over the last few years. Features such as “Certificate Trust” allow users to configure a custom set of rules for implementing Certificate Pinning for various SSL certificates. This helps prevents man-in-the-middle (MitM) attacks that take advantage of the shortcomings of the SSL, which have gained quite a bit of attention in the past few years, with incidents such as the DigiNotar fiasco.

Additionally, several memory protection enhancements were added for the purpose of proactively detecting exploitation of both known and unknown vulnerabilities. These protection mechanisms primarily center on detection and prevention of ROP-based exploits. Using these memory protection enhancements, EMET is even able to detect and prevent an ASLR/DEP bypass that was shown off at this year’s CanSecWest security conference.

EMET can be put into an “Audit mode” that will stop it from blocking offending processes, and instead report when a rule is triggered. This allows for compatibility testing before mass deployment and makes it much more realistic to be used as a reporting device if active blocking is too severe for a specific workstation. After rules are developed, EMET can be pushed out and managed through Group Policy.

As with any mitigation or protection mechanism, there is usually going to be some technique that bypasses the defense. After all, this is a never-ending struggle in a fight to secure highly valuable data. However, this does add on an additional layer that attackers will need to plan for and attempt to bypass. It becomes especially valuable in situations where legacy software is involved, when uninstalling just isn’t an option. In order to help secure your environment, we recommend that you at least test out EMET, and if it works for you, get it deployed as soon as possible. In order to help with the process, you can use your trusty Retina Network Security Scanner (audit ID 19247 & 19248) to locate machines on your network that do not yet have EMET deployed on them.

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Additional articles

CyberResiliency

6 things I like about Gartner’s Cyber Resiliency Strategy

Posted August 27, 2015    Nigel Hedges

There were 6 key principles, or recommendations, that Gartner suggested were important drivers towards a great cyber resiliency posture. I commented more than once during the conference that many of these things were not new. They are all important recommendations that are best when placed together and given to senior management and the board – a critical element of organisations that desperately need to “get it”.

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powerbroker-difference-1

Why Customers Choose PowerBroker: Flexible Deployment Options

Posted August 26, 2015    Scott Lang

BeyondTrust commissioned a study of our customer base in early 2015 to determine how we are different from other alternatives in the market. What we learned was that there were six key differentiators that separate BeyondTrust from other solution providers in the market. We call it the PowerBroker difference,

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Mac-Security-Enterprise

On Demand Webinar: Security Risk of Mac OS X in the Enterprise

Posted August 20, 2015    BeyondTrust Software

In the last several years, Mac administrators have come to realize that they may be just as vulnerable to exploits and malware as most other operating systems. New malware and adware is released all the time, and there have been serious vulnerabilities patched by Apple in the past several years, some of which may afford attackers full control of your systems.

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