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Quest Security Guardian is an Active Directory security tool that simplifies hybrid AD security.
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SaaS Security Guardian
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Quest Software
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Security Guardian - The superior choice for Active Directory Security

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Thinking Semperis? Think again.

Here’s why thousands of customers choose Quest for AD security. 
Hybrid AD Assessment

Hybrid AD Assessment

Get full visibility into exposures, vulnerabilities, and Tier 0 assets and benchmark configurations against industry standards to reduce your attack surface.
AD Object Protection

AD Object Protection

Lock down and secure critical objects, including Group Policy Objects (GPOs), from compromise and misconfiguration.
Unmatched 5W Forensics

Unmatched 5W Forensics

Know who, what, where, when and which workstations suspicious activities and exposures occur in your identity stack with intelligent and contextual notifications.
Continuous Threat Detection

Continuous Threat Detection

Continuously monitor hacker TTPs and configuration drifts, with automatic detection of spikes in account lockouts, failed sign-ins, permission changes, and file renames.
AI-Enhanced Security

AI-Enhanced Security

Address complex AD challenges, unify data and bridge gaps in expertise with the markets-first Microsoft Security Copilot plugin for hybrid AD security.

Must-have features

Quest Advantage

Security Guardian

AD object protection

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AI-driven insights

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Task automation

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Tier 0 management

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Impact analysis

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Threat prevention

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SIEM integration

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Guided response

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Real-time threat detection

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Best practices benchmarking

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Supply chain security

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Global 24x7 support

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What our customers are saying

Prysmian Group

Rebuilding an AD object that was improperly modified could take hours, which would impact operation ... the Quest object protection enables us to prevent such issues from arising...

Allessandro Bottin Global Infrastructure & Operation Manager, Prysmian Group

Large Retail Chain

We've had pen testers come in and be very surprised that they could not get past the Quest object protection.

Enterprise Administrator, Large Retail Chain

Oil and Gas Company

After meeting with the other vendor a second time and asking questions, neither my boss or I are comfortable with the size of the other vendor’s support team.

Lead Systems Engineer, Oil and Gas Company

    Critical questions to ask when evaluating AD vendors

    Security Guardian offers unparalleled clarity into your hybrid AD environment, automatically identifying and monitoring Tier 0 assets in both AD and Entra ID. Be cautious of vendors who fail to prioritize critical object protection, as this can leave your organization vulnerable to compromise. 
    Security Guardian empowers you to lock down critical objects, including GPOs, with precise control and effortless rollback capabilities. Be wary of solutions that offer limited or rollback-only recovery, as they may not fully safeguard your environment from unauthorized changes.
    Security Guardian integrates effortlessly with Microsoft Security Copilot, Sentinel, and third-party SIEM tools like Splunk, forwarding critical findings to ensure centralized visibility and enhanced collaboration. Looking for solutions that not only work within your ecosystem but also enhance your cross-product insights can be key to increasing productivity and filling in security gaps.
    With its Microsoft Security Copilot plugin, Security Guardian enhances your team’s capabilities through AI-driven insights, natural language reporting, and guided remediation, supplementing expertise during talent shortages.
    Security Guardian continuously monitors for anomalous activities, such as permission changes and account lockouts, using Azure AI and Machine Learning to identify hacker TTPs (Tactics, Techniques, and Procedures) early. This minimizes false positives and ensures faster response times.
    While EDR and NDR focus on endpoints and network traffic, and XDR integrates their signals for unified visibility, many solutions fail to address identity-specific vulnerabilities. Security Guardian fills this critical gap by delivering robust Identity Threat Detection and Response (ITDR) capabilities tailored for protecting Active Directory and Entra ID. With focused protection for identity infrastructure, it complements your existing EDR and NDR solutions, ensuring holistic security for your hybrid AD environment.
    Quest offers award-winning technical support with 24/7/365 availability, 1-hour response times for Level 1 cases, and a Premier Support option to reduce SLA times by half.

    Quest is extremely mindful of the increased attacks on supply chains and takes great lengths to protect it, with mature supply chain risk management practices and an airgap-secured assembly process that exceeds industry standards. Quest performs no development in countries of security concern.

    While other vendors may advertise being cyber-first, be sure to validate supply chain risk management practices, and ensure that your leadership is comfortable with the locations/countries where development is performed.

    Quest has the most AD experience in the industry

    You won’t find this platform coverage anywhere else. There are other point solutions that claim a lot of things, but Quest is the only single-vendor provider that delivers comprehensive solutions for:

    Secure AD from 600M attacks a day

    See how Security Guardian can secure your AD environment

    “We’ve had pen testers come in and be very surprised that they could not get past the Quest object protection.” Enterprise Administrator, Large Retail Chain

    • Fast incident response - Determine the who, what, where, how and when of suspicious activities  quickly with intelligent and contextual notification.
    • AD threat prevention - Revert any unwanted and suspicious changes to your AD objects back to a previously trusted state.
    • AD threat detection -  Stay on top of your threat mitigation goals by continuously monitoring for IOCs and configuration drifts, so you can respond faster to an incident.
    • Reduce your attack surface - Benchmark current Active Directory configuration against pre-defined industry best practices for full visibility into IOEs, IOCs and Tier Zero assets.
    • Gain full control of your critical assets - Ensure your most exploitable components receive the  utmost attention, and gain control over them, to make sure you're always aligned with your organization's needs.
    • Seamless integrations - Forward IOEs and IOCs to your SIEM tools like Microsoft Sentinel and Splunk for centralized visibility.
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    Microsoft Copilot with Quest Security Guardian

    Simplify security and accelerate response times, empowering your teams to tackle threats with confidence. Integrating Microsoft Security Copilot with Security Guardian enhances your ability to address hybrid Active Directory challenges, bridging gaps in cybersecurity expertise, unifying teams and data, and bolstering AD proficiency.

    Enhance your team’s capabilities to:

    • Clarify complex issues using natural language prompts and straightforward reporting.
    • Uncover overlooked details with a deeper understanding of findings.
    • Mitigate talent shortages by supplementing human expertise.

    Microsoft Security Copilot integration

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    Key Benefits

    Clarity

    Transform intricate security alerts into clear, actionable summaries, enabling faster, more informed decisions across your hybrid AD environment.

    Speed

    Leverage AI-driven insights to rapidly detect, investigate, and mitigate AD threats, ensuring your team stays ahead of adversaries with guided responses and automated task optimization.

    Expertise

    Enhance your team's proficiency by automating routine tasks and providing step-by-step guidance, allowing experts to focus on the most critical security challenges.

    Unification

    Integrate Microsoft Security portfolio and third-party solutions, enhancing context and signal strength to defend hybrid identity while ensuring seamless data access across your security ecosystem to stay ahead of emerging risks.

    Elevate your hybrid Active Directory security

    By combining the strengths of Microsoft Security Copilot and Security Guardian, you gain AI-driven natural language processing for superior access to critical security signals, turning complex threats into clear, actionable intelligence. Empower your team with AI-enhanced capabilities that supplement human expertise, reduce response times and ensure peak efficiency regardless of skill level.

    Incident summarization

    Distill complex security findings from Security Guardian into concise summaries, enabling faster decision-making and response across your hybrid AD environment.

    Impact analysis

    Leverage AI-driven analytics from Microsoft Security Copilot, enhanced by Security Guardian data, to prioritize response efforts by assessing the impact of incidents on systems, data, and users.

    Guided response

    Receive step-by-step incident response guidance from Microsoft Security Copilot, enriched with insights from Security Guardian, including recommended actions for swift resolution.

    Microsoft Sentinel integration

    Unlock faster, more intuitive access to Security Guardian incident findings within Microsoft Sentinel with Microsoft Security Copilot. Empower your team with richer contextual analysis and optimized security workflows.

    Security reporting

    Summarize any event, incident, or threat in seconds and prepare customizable, ready-to-share reports tailored to your audience.

    Automated task optimization

    Automate repeatable security tasks with Microsoft Security Copilot’s Promptbooks, which guide users of any skill level navigate specific security processes using structured, customizable workflows, enhancing efficiency and consistency.

    Invoke Security Guardian skills

    Streamline your security operations with Microsoft Security Copilot. Activate Security Guardian skills to educate users on key findings, delve into potential threats, and generate detailed reports on top active threat indicators.

    Unified security integration

    Seamlessly integrate Security Guardian with Microsoft Security products and other third-party security tools to provide richer context and enhanced signal strength. This ensures a fortified hybrid identity defense with cohesive, cross-product insights.

    Optimized hybrid AD security

    Features  

    Security Guardian

    with Security Copilot

    Real-time Threat Detection

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    Best Practices Benchmarking

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    IOE/IOC Monitoring

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    AD Misconfiguration Protection

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    Threat Prevention

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    SIEM Integration

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    Impact Analysis

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    Guided Response

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    Task Automation

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    Custom Reporting

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    Al-Driven Insights

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    Extended Integration

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    Pre-built Prompts

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    FAQs

    Yes, the integration is designed to work seamlessly within the Microsoft Security ecosystem, including products like Microsoft Sentinel, Microsoft Defender XDR, and Microsoft Intune. Additionally, it can integrate with other third-party security tools, as long as those tools also have plugins for Microsoft Security Copilot, enhancing your overall security posture by providing richer context and cross-product insights.
    To use this integration, you'll need active subscriptions to both Security Guardian and Microsoft Security Copilot, as well as all the prerequisites for these products, such as compatible infrastructure and security configurations. Additionally, you’ll need to enable and configure the Security Guardian plugin within Microsoft Security Copilot to connect with Microsoft Sentinel and other security tools.
    To use the Security Guardian plugin, you’ll need to enable it within the Microsoft Security Copilot interface. After enabling the plugin, you can configure it to connect with Microsoft Sentinel and other relevant security tools in your environment. Detailed setup and configuration instructions are provided within the Microsoft Security Copilot documentation and Quest support resources.
    The Security Guardian plugin for Microsoft Security Copilot is free of charge. You’ll only need to maintain active subscriptions for Security Guardian, Microsoft Security Copilot and Sentinel to access the full range of features and capabilities.

    Security Guardian

    Enhance identity threat detection and response (ITDR) and your Active Directory security posture. From a streamlined, unified workspace, Security Guardian alleviates alert fatigue by prioritizing the vulnerabilities and configurations, making it easier for you to maximize hybrid Active Directory security. Powered by Azure AI and Deep Machine Learning (ML), and seamlessly integrated with Microsoft Security Copilot, Security Guardian quickly spotlights what happened, if you’re exposed, and how to remediate.

    Microsoft Security Copilot integration

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    Protect critical Tier 0 assets with the ability to:

    Benchmark your AD and Entra ID configurations against industry-security hygiene practices.

    Lock down critical objects, such as GPOs, from misconfiguration and compromise.

    Continuously monitor for anomalous user activities and emerging hacker tactics with Machine Learning.

    Leverage cross-product AI insights from Microsoft Security Copilot to simplify and accelerate threat detection and response.

    Gartner lists Quest as a representative vendor for ITDR in the latest Emerging Tech Impact Radar: Security report

    Key Benefits

    Reduce Attack Surface

    Assess your hybrid AD against industry best practices, delivering comprehensive Active Directory security while mitigating vulnerabilities and improving defensive posture.

    Simplify Active Directory Security

    Remove the knowledge gap barriers of AD and Entra ID with visibility, control and protection of critical assets.

    Control Hybrid AD Configurations

    Stay one step ahead of attackers by surfacing and mitigating misconfigurations in AD and Entra ID.

    Detect Anomalies

    Machine Learning helps identify unusual patterns in user/administrator behavior, such as spikes in failed sign-ins, permission changes, and file modifications, allowing you to respond quickly.

    Avoid Alert Fatigue

    Reduce the noise and easily surface high-value alerts, ensuring swift threat response.

    Ensure SaaS Flexibility

    Experience simple implementation, scalability and cost savings of SaaS deployments.

    Enhance ITDR and reduce attack surface with simplicity and speed

    Securing identity is crucial for maintaining business continuity, particularly in hybrid environments with Active Directory and Entra ID. With Active Directory security being a top priority, organizations must consider that Forrester reports downtime costs as high as $730K per hour, and with 80% of breaches involving compromised identities, these systems have become prime targets. Security Guardian mitigates these risks and by using Machine Learning to establish behavioral baselines, detecting unusual patterns like spikes in account lockouts, failed sign-ins, and permission changes. Through integration with Microsoft Security Copilot, it extends powerful and seamless ITDR functionality across your hybrid AD environment.

    Microsoft Security Copilot Integration

    Security Guardian integrates with Microsoft Security Copilot to provide comprehensive protection for your hybrid AD environment. By combining the strengths of both platforms, you gain a powerful solution that simplifies complex security threats, accelerates your response times, and empowers your security team to operate at peak efficiency.
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    Hybrid AD Security Assessment

    Benchmark current Active Directory configuration against pre-defined industry best practices, elevating your Active Directory security strategy. You’ll get full visibility into IOEs, IOCs and Tier 0 assets. This Active Directory security tool not only helps with threat mitigation, but also attack surface reduction.

    Critical Asset Focus

    Identify and prioritize Tier 0 assets effortlessly, ensuring that your most exploitable components receive the utmost attention. Gain full control over these critical assets, enabling you to modify the Tier 0 list dynamically, so you're always aligned with your organization's evolving needs.

    Hybrid AD Threat Prevention

    Secure critical AD and Entra ID objects from compromise and misconfiguration, including sensitive Group Policy Objects (GPOs). Get focused reports on object status, as well as the ability to effortlessly revert any unwanted changes to a previous, trusted state.

    Hybrid AD Threat Detection

    Leverage Azure AI and Machine Learning to automatically detect anomalous behaviors within Active Directory and Entra ID, such as unusual spikes in account lockouts, failed sign-ins, permission changes, and file renames. By identifying these anomalies early, Security Guardian helps you stay on top of threat mitigation goals and predict potential compromises before they escalate. Continuously monitor for hacker TTPs (Tactics, Techniques, and Procedures) and configuration drifts, ensuring faster response times and reduced false positives.

    Fast Incident Response

    Grasp the who, what, where, how and when of suspicious activities with intelligent and contextual notifications that will help reduce alert fatigue. Seamlessly forward security signals to your SIEM tools, such as Microsoft Sentinel and Splunk, for seamless integration and centralized visibility.

    Unified Hybrid AD Security Workspace

    Remove the complexity from AD and Entra ID security by focusing on core operations with a friendly user interface that provides visibility into exposures, vulnerabilities and other security signals seamlessly.
    Get an evaluation of your AD environment(s) and gain insight into the most actionable issues within it with our free AD security assessment.
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    Prysmian Group

    Rebuilding an AD object that was improperly modified could take hours, which would impact operation ... the Quest object protection enables us to prevent such issues from arising in the first place.

    Allessandro Bottin Global Infrastructure & Operation Manager, Prysmian Group

    Large Retail Chain

    We've had pen testers come in and be very surprised that they could not get past the Quest object protection.

    Enterprise Administrator, Large Retail Chain

      Security Guardian FAQs

      While Microsoft Defender for Identity (MDI) provides robust security, Security Guardian offers additional specialized features that enhance Active Directory security and protection for your environment. Security Guardian alerts on specific attacker tools, techniques, and procedures (TTPs) within Active Directory, ensuring comprehensive threat detection. It enforces adherence to Privilege Account Management policies by hindering implicit relationships, especially concerning Tier 0 objects. Security Guardian automatically categorizes these critical objects and monitors any drifts from their known state. Furthermore, Security Guardian proactively identifies, alerts on, and protects critical objects (including GPOs) from setting changes and database attacks. It also retains findings and audit data in compliance with retention requirements, ensuring thorough and compliant security management.

      Additionally, Security Guardian integrates with MDI by forwarding its findings to Sentinel, which, in turn, sends signal data to Microsoft Defender. * MDI to Sentinel forwarding requires special Microsoft licensing

      Security Guardian enhances CrowdStrike Falcon AD by providing additional specialized features for your Active Directory environment. It alerts on specific attacker tools, techniques, and procedures (TTPs) within Active Directory, ensuring comprehensive threat detection. Security Guardian enforces adherence to Privilege Account Management policies by hindering implicit relationships, particularly concerning Tier 0 objects. It automatically categorizes these critical objects and monitors any drifts from their known state. Additionally, Security Guardian proactively identifies, alerts on, and protects against Active Directory misconfigurations, such as Group Policy Object (GPO) setting changes and database attacks (.DIT). It also retains findings and audit data in compliance with retention requirements, ensuring thorough and compliant security management.

      Change Auditor and On Demand Audit provide enriched event data from Active Directory and offer Active Directory and Group Policy protection capabilities. Security Guardian enhances these features by capturing Active Directory object state and misconfiguration data in addition to Change Auditor event data. It automates the protection capabilities of Tier 0 objects, ensuring a more comprehensive security approach. Moreover, Security Guardian integrates seamlessly with Change Auditor and On Demand Audit. It allows for the direct invoking of Tier 0 protection templates available in Change Auditor and ensures that relevant events and anomalies are sent from On Demand Audit to Security Guardian, creating a robust and integrated security framework.

      SpecterOps BloodHound Enterprise provides Active Directory Tier 0 identification and attack path management. Security Guardian enhances these capabilities by highlighting drifts in Tier 0 objects' known-state, allowing for immediate governance actions to certify or revert changes. It enforces adherence to Privilege Account Management policies by hindering implicit relationships on Tier 0 objects. Security Guardian also collects attack surface configurations on domain controllers, such as the print spooler service, and can immediately disrupt certain Active Directory-based attack paths, like changes in ownership of Tier 0 objects and .DIT attacks. Furthermore, Security Guardian integrates seamlessly with SpecterOps BloodHound Enterprise by utilizing it as a Tier 0 provider. SpecterOps BloodHound Enterprise Tier 0 impact values are surfaced directly on the Security Guardian interface, creating a cohesive and powerful security solution.

      Yes! SIEM solutions, like Sentinel and Splunk, aggregate tremendous amounts of signals from various sources to provide comprehensive security monitoring. Security Guardian enhances these solutions by being specifically built for Active Directory. It scans and surfaces identity misconfigurations and exposures related to Active Directory and Tier 0 objects. Security Guardian integrates seamlessly with SIEM tools through direct forwarding of findings via standard APIs, ensuring that all relevant data is included in your SIEM for a more robust and targeted security posture.
      Security Guardian leverages Azure AI and Machine Learning to enhance Active Directory (AD) and Entra ID security by automatically analyzing patterns of activity and identifying anomalies that could indicate security risks. Machine Learning models help the solution establish baselines for normal AD and Entra ID behavior, allowing it to detect deviations, such as unusual sign-in failures or permission changes, more accurately. This reduces false positives, surfaces critical vulnerabilities, and ensures that your environment remains secure by prioritizing the most exploitable vulnerabilities. These AI-driven insights into abnormal behavior improve the speed and efficiency of threat detection, helping you stay ahead of potential attacks.
      Quest Security Guardian enhances your Active Directory (AD) security by providing specialized features that complement Microsoft Copilot for Security. Quest Security Guardian excels at detecting and alerting on specific attacker tools, techniques, and procedures (TTPs) within AD, ensuring comprehensive threat detection. It automatically categorizes and tracks Tier 0 objects to prevent unauthorized changes, and proactively identifies and protects against AD misconfigurations, such as Group Policy Object (GPO) changes and database attacks (.DIT). By integrating with Microsoft Security Copilot, these capabilities are enhanced with AI-driven insights and guided remediation, providing a comprehensive and proactive defense for your hybrid AD environment.
      At Quest, your privacy is our priority. When leveraging Azure AI and Machine Learning within Security Guardian, we ensure that your data remains secure and private. The data used for AI-driven insights is processed within your own environment, and we do not share your data with third parties. Furthermore, we do not use or access anyone else's data to enhance or train our Machine Learning models—only your data is used to provide relevant insights for your security needs.

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