Best Microsoft Defender EASM Alternatives & Competitors in 2026
Top picks: Outpost24 External Attack Surface Management, Hadrian Agentic AI, Censys Internet Map — plus 45 more compared.
Attack SurfaceTop picks: Outpost24 External Attack Surface Management, Hadrian Agentic AI, Censys Internet Map — plus 45 more compared.
Attack SurfaceMicrosoft Defender EASM is a commercial External Attack Surface Management tool developed by Microsoft. Security professionals most commonly compare it with Outpost24 External Attack Surface Management, Hadrian Agentic AI, Censys Internet Map, watchTowr Preemptive Exposure Management, and QuimeraX External Attack Surface Management. All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.
A closer look at the 8 most relevant alternatives and competitors to Microsoft Defender EASM, including their key features and shared capabilities.
Cloud platform for continuous visibility & mgmt of external attack surfaces
AI-powered platform for continuous attack surface discovery and pentesting
Internet intelligence platform for asset discovery and attack surface mapping
Preemptive Exposure Management platform for continuous attack surface testing
EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities
Attack surface management platform for monitoring vulnerabilities and breaches
External threat intelligence platform for attack surface mgmt & data breach prevention
AI-driven cyber-surveillance platform for threat detection and monitoring
Cloud platform for continuous visibility & mgmt of external attack surfaces
AI-powered platform for continuous attack surface discovery and pentesting
Internet intelligence platform for asset discovery and attack surface mapping
Preemptive Exposure Management platform for continuous attack surface testing
EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities
Attack surface management platform for monitoring vulnerabilities and breaches
External threat intelligence platform for attack surface mgmt & data breach prevention
AI-driven cyber-surveillance platform for threat detection and monitoring
Internet intelligence platform for asset discovery and threat analysis
AI-driven internet scanning platform for asset discovery and threat hunting
Attack surface monitoring platform with automated security validation testing
External attack surface management platform for asset discovery and risk detection
EASM platform with integrated CTI for asset discovery and vulnerability mgmt
Attack surface management platform with dark web & brand monitoring capabilities
Attack surface discovery platform monitoring digital assets and data exposures
Continuous discovery, monitoring, and testing of external assets and exposures
EASM platform with continuous asset discovery and threat intelligence context
Attack surface management platform for asset discovery and vulnerability monitoring
CTI-driven external attack surface mgmt with threat exposure prioritization
External attack surface monitoring with dark web intelligence and scanning
Cyber risk monitoring platform with vulnerability scanning and alerting
External risk mgmt platform with threat intel, dark web monitoring, and ASM
External attack surface management platform with AI-powered risk assessment
Real-time attack surface monitoring and vulnerability management platform
Cyber risk management platform for SMEs with breach monitoring and training
AI-native platform for autonomous threat monitoring, detection, and remediation
OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.
AI-driven platform for cyber risk assessment, monitoring, and mitigation.
EASM platform for continuous external attack surface discovery and risk mgmt.
xASM and cyber risk quantification platform with continuous monitoring.
xASM platform covering external, internal, and API attack surfaces.
Managed ASM service with 24/7 SOC monitoring for critical infrastructure orgs.
ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web.
AI-powered attack surface management platform for cybersecurity monitoring
External attack surface mgmt platform for discovering & monitoring assets
External attack surface management platform with continuous asset discovery
SaaS platform for attack surface management and vulnerability detection
Attack surface mgmt platform with vuln scanning and cloud security features
External attack surface mgmt platform with continuous discovery & validation
Attack surface management platform for automated pentesting and vuln scanning
Discovers and monitors external internet assets for exposures and vulnerabilities
External attack surface mgmt with automated pentesting and validation
SOCRadar Attack Surface Management is an EASM platform that continuously discovers, monitors, and assesses internet-facing digital assets for vulnerabilities and security risks.
Automated ASM tool for multi-cloud environments with continuous asset discovery
External attack surface mgmt with asset discovery and on-demand pentesting
Active attack surface mgmt solution for discovering & remediating unknown risks
Passive asset discovery platform using Netflow data for attack surface mapping
External attack surface management platform for asset discovery and vuln mgmt
Common questions security professionals ask when evaluating alternatives and competitors to Microsoft Defender EASM.
The most popular alternatives to Microsoft Defender EASM include Outpost24 External Attack Surface Management, Hadrian Agentic AI, Censys Internet Map, watchTowr Preemptive Exposure Management, and QuimeraX External Attack Surface Management. These External Attack Surface Management tools offer similar capabilities and are frequently compared by security professionals evaluating their options.
