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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.

Implementing Least Privilege for Windows the Easy Way

Posted July 31, 2014    Morey Haber

Restricted Area SignThe concept of least privilege states that asset users should have the lowest level of access privileges required to effectively conduct their jobs. Implementing least privilege can bring several benefits to your organization, including:

  • Increased security by reducing the attack surface available to users and to potential attackers who compromise user systems via phishing, malware, etc.
  • Reduced help desk costs due to fewer technical problems resulting from users “breaking things” with administrative privileges
  • Compliance with least-privilege requirements in regulations such as PCI DSS and MAS guidelines – as well as with guidelines such as the Top 20 Critical Security Controls
  • More effective forensic and audit activities (when a solution is in place to document privileged activity)

At its most basic level, least privilege is about restricting users to standard user permissions. Let’s drill down a bit, though. Effectively leveraging least privilege to secure user environments means taking several specific actions, including:

  • Removing secondary usernames and passwords (e.g., username-admin) for running tasks with elevated privileges
  • Removing access to local administrator accounts for user tasks and maintenance
  • Removing backdoor local interactive administrative accounts
  • Removing domain user accounts from the local computer administrator account
  • Denying access to operating system functions that could alter the configuration and compliance settings for the asset
  • Denying system configuration changes and software installs / uninstalls, whether intentional or unintentional
  • Enforcing application usage as a standard user in case of an advanced persistent threat or malware

Easy, right? Not if you do it manually. You can try, but forget about those “reduced help desk costs” I mentioned above. You might want to buy some serious headache medicine while you’re at it.

Fortunately, there are policy-based tools that interact seamlessly with Active Directory and Web Services to automatically manage privileges in Windows environments. Tools like PowerBroker for Windows enable you to leverage Group Policy to create policies and assign them to users or computers – covering just about any privilege management use case you can imagine.

At their core, these solutions keep workers at standard user privileges while elevating privileges for their applications. This means that users can get their jobs done without ever requiring elevated privileges themselves. How does this work? Well, PowerBroker for Windows modifies the application’s security token, enabling the application (or OS function) to run with the permissions required for the task at hand. The application appears to be fully interactive, as if the user executed it with administrator privileges, but in reality it’s not. This is because PowerBroker includes controls to regulate things like sub process launches and directories – as well as other tamper proofing features to ensure the application is not misused after granting elevated privileges.

For those cases where your users or admins directly need elevated privileges for specific server or desktop functions, BeyondTrust offers a privileged password management solution. PowerBroker Password Safe securely stores passwords, allows users to check them out, connects remotely with compete session recording, and automatically randomizes and resets passwords once sessions are complete.

> Learn more about automated Windows privilege management
> Read the PowerBroker for Windows Use Cases White Paper
> Learn more about privileged password and session management

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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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