The closest Synack Attack Surface Discovery alternatives are ctlogs.dev, Mandiant Attack Surface Management and DNS Assistant. Picking a Synack Attack Surface Discovery alternative comes down to fit: External Attack Surface Management coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
Closest 48 alternatives shownClosest matches: ctlogs.dev, Mandiant Attack Surface Management, DNS AssistantPage updated Nov 2026
The product
Synack Attack Surface Discovery
by Synack
External attack surface mgmt with asset discovery and on-demand pentesting
Need the answer fast? Best Attack Surface Management Solutions for Business picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more.See the shortlist
Synack Attack Surface Discovery is a commercial External Attack Surface Management solution made by Synack. The closest matches by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, Mandiant Attack Surface Management, DNS Assistant, Outpost24 External Attack Surface Management, and StrikeOne Attack Surfa. All 48 alternatives on this page are ranked the same way.
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VisitThese 8 solutions overlap most with Synack Attack Surface Discovery. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
Fast Certificate Transparency search and JSON API for subdomain reconnaissance.
Key features: Real-time Certificate Transparency Search, Automated Subdomain Enumeration, High-Performance REST JSON API, Wildcard & Fingerprint Matching, SSL/TLS Certificate History Tracking
View ctlogs.devctlogs.dev alternativesSynack Attack Surface Discovery vs ctlogs.dev
Fast Certificate Transparency search and JSON API for subdomain reconnaissance.
Discovers and monitors external internet assets for exposures and vulnerabilities
DNS posture mgmt platform for real-time DNS & WHOIS change monitoring.
Cloud platform for continuous visibility & mgmt of external attack surfaces
AI-powered attack surface management platform for cybersecurity monitoring
AI-powered platform for continuous attack surface discovery and pentesting
Discovers and monitors external-facing assets and vulnerabilities
External attack surface mgmt platform for discovering & monitoring assets
External attack surface management platform with continuous asset discovery
Internet intelligence platform for asset discovery and attack surface mapping
SaaS platform for attack surface management and vulnerability detection
EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities
Attack surface management platform for monitoring vulnerabilities and breaches
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.
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
Active attack surface mgmt solution for discovering & remediating unknown risks
Internet intelligence platform for asset discovery and threat analysis
External attack surface management platform for asset discovery and vuln mgmt
AI-driven EASM platform for discovering and monitoring external-facing assets
External attack surface management platform for asset discovery and risk detection
EASM platform with integrated CTI for asset discovery and vulnerability mgmt
Discovers, monitors, and assesses external attack surface assets continuously.
Continuous discovery, monitoring, and testing of external assets and exposures
EASM platform with continuous asset discovery and threat intelligence context
Customizable ASM platform for asset discovery, monitoring, and enrichment
Internet-connected asset search engine with vulnerability scanning capabilities
EASM platform that discovers, attributes, and actively validates external assets and risks
Attack surface management platform for asset discovery and vulnerability monitoring
ASM platform for discovering, monitoring, and prioritizing external/internal assets
CTI-driven external attack surface mgmt with threat exposure prioritization
ASM platform that scans external attack surfaces hourly for vulnerabilities
Cloud-based EASM platform for discovering internet-facing assets & exposures
Platform for continuous attack surface discovery, monitoring, and remediation
Continuously maps digital footprint, identifies exposures & validates exploitability
External attack surface management platform with AI-powered risk assessment
External attack surface management platform for asset discovery and monitoring
Monitors external attack surface to identify assets and vulnerabilities
External attack surface monitoring with threat intel and brand protection
External attack surface management platform with threat intelligence
Real-time attack surface monitoring and vulnerability management platform
AI-powered EASM platform for discovering and prioritizing external risks
OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.
EASM platform for continuous external attack surface discovery and risk mgmt.
xASM platform covering external, internal, and API attack surfaces.
Maps external attack surface including assets, dark web exposure, and leaks.
Cyber Exposure Manager: continuous visibility and remediation for external risk
Common questions when weighing alternatives to Synack Attack Surface Discovery.
The closest matches to Synack Attack Surface Discovery by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, Mandiant Attack Surface Management, DNS Assistant, Outpost24 External Attack Surface Management, and StrikeOne Attack Surfa. All of them are External Attack Surface Management products.
This page shows 48 alternatives to Synack Attack Surface Discovery, all in the External Attack Surface Management category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
Synack Attack Surface Discovery is a commercial External Attack Surface Management product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free.
Synack Attack Surface Discovery is a External Attack Surface Management product in the Exposure & Vulnerability Management category. You can compare it with the 48 other External Attack Surface Management products on this page.
Discovers and monitors external internet assets for exposures and vulnerabilities
Key features: 10 listed. See them on the Mandiant Attack Surface Management page.
View Mandiant Attack Surface ManagementMandiant Attack Surface Management alternativesSynack Attack Surface Discovery vs Mandiant Attack Surface Management
DNS posture mgmt platform for real-time DNS & WHOIS change monitoring.
Key features: 10 listed. See them on the DNS Assistant page.
View DNS AssistantDNS Assistant alternativesSynack Attack Surface Discovery vs DNS Assistant
Cloud platform for continuous visibility & mgmt of external attack surfaces
Key features: 10 listed. See them on the Outpost24 External Attack Surface Management page.
View Outpost24 External Attack Surface ManagementOutpost24 External Attack Surface Management alternativesSynack Attack Surface Discovery vs Outpost24 External Attack Surface Management
AI-powered attack surface management platform for cybersecurity monitoring
Key features: 5 listed. See them on the StrikeOne Attack Surfa page.
View StrikeOne Attack SurfaStrikeOne Attack Surfa alternativesSynack Attack Surface Discovery vs StrikeOne Attack Surfa
AI-powered platform for continuous attack surface discovery and pentesting
Key features: 10 listed. See them on the Hadrian Agentic AI page.
View Hadrian Agentic AIHadrian Agentic AI alternativesSynack Attack Surface Discovery vs Hadrian Agentic AI
Discovers and monitors external-facing assets and vulnerabilities
Key features: 10 listed. See them on the Microsoft Defender EASM page.
View Microsoft Defender EASMMicrosoft Defender EASM alternativesSynack Attack Surface Discovery vs Microsoft Defender EASM
External attack surface mgmt platform for discovering & monitoring assets
Key features: 10 listed. See them on the Halo Security Attack Surface Management page.
View Halo Security Attack Surface ManagementHalo Security Attack Surface Management alternativesSynack Attack Surface Discovery vs Halo Security Attack Surface Management