Quest Identity Defense vs. Quest Change Auditor

Quest Identity Defense, formerly called Security Guardian, is an agentic AI-powered identity threat detection and security platform for hybrid Active Directory and Microsoft Entra ID environments. It provides continuous visibility and observability across both human and non-human identities to help organizations identify and investigate identity-related security risks. The platform detects Tier 0 exposures, privileged attack paths, risky configurations, anomalous activity, and vulnerabilities associated with workload and other non-human identities. Identity posture management benchmarks Active Directory and Entra ID configurations against industry best practices and provides remediation guidance for identified vulnerabilities and compromises. Proactive object protection is designed to prevent unauthorized or dangerous changes to critical Tier 0 objects before those changes result in compromise. During an active incident, Shields Up and agentic AI defense capabilities can automatically freeze vulnerable users or objects, stop attacks in progress, and limit lateral movement through the environment. Deep monitoring and auditing provide human-readable records showing who performed a change, what was modified, when and where the event occurred, and which workstation was involved. Integrated AI analyzes identity telemetry and converts it into security insights and remediation recommendations that can help security teams reduce investigation and response time. Quest states that Identity Defense can improve mean time to respond by 44% by helping teams reduce alert fatigue and move more quickly from detection to investigation and containment. The platform includes a flexible API for extending identity security data into existing security ecosystems and custom workflows, while its auditing capabilities can also help organizations improve compliance readiness.

Quest Change Auditor is an IT auditing, vulnerability monitoring, and security threat detection platform designed for Active Directory and hybrid Microsoft environments. It provides real-time visibility into important user, administrator, configuration, and authentication changes to help organizations identify potentially malicious activity and investigate security incidents. Change Auditor extends monitoring across Active Directory, Azure AD, Office 365, Windows Server, Exchange, SQL Server, network-attached storage, SharePoint, and OneDrive for Business. The platform detects indicators of compromise across AD and Azure AD while auditing suspicious activity across file servers, Office 365, and Exchange to identify attackers that may already be operating within the network. It can also monitor lateral movement and post-attack activity to provide security teams with additional context about the progression of an intrusion. Preventive controls can block unauthorized changes to critical groups, Group Policy settings and links, sensitive mailboxes, and the Active Directory database regardless of privileges an attacker has compromised. Built-in alerts identify indicators of compromise, while exposure assessments help organizations uncover vulnerabilities across Active Directory, Azure AD, and authentication activity. Change Auditor can detect common Kerberos authentication weaknesses associated with Golden Ticket and Pass-the-Ticket attacks and can send critical change and pattern alerts to email and mobile devices. Its auditing engine captures change information without depending solely on system-provided audit logs and converts events into normalized records showing who changed what, when, where, from which workstation, and the relevant before-and-after values. Threat timelines and related searches connect individual changes with surrounding events to support forensic analysis and security incident response.