# Synack Attack Surface Discovery alternatives and competitors (2026) The closest Synack Attack Surface Discovery alternatives are [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev), [Mandiant Attack Surface Management](https://cybersectools.com/tools/mandiant-attack-surface-management) and [DNS Assistant](https://cybersectools.com/tools/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 shown. Closest matches: ctlogs.dev, Mandiant Attack Surface Management, DNS Assistant. ## The product [Synack Attack Surface Discovery](https://cybersectools.com/tools/synack-attack-surface-discovery) by Synack External attack surface mgmt with asset discovery and on-demand pentesting Category: [Exposure & Vulnerability Management](https://cybersectools.com/categories/exposure-vulnerability-management) · Pricing model: Commercial Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more. ## Synack Attack Surface Discovery alternatives and competitors Synack Attack Surface Discovery is a commercial [External Attack Surface Management](https://cybersectools.com/categories/external-asm) solution made by Synack. The closest matches by shared tags and NIST CSF 2.0 coverage are [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev), [Mandiant Attack Surface Management](https://cybersectools.com/tools/mandiant-attack-surface-management), [DNS Assistant](https://cybersectools.com/tools/dns-assistant), [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management), and [StrikeOne Attack Surfa](https://cybersectools.com/tools/strikeone-attack-surfa). All 48 alternatives on this page are ranked the same way. ## The closest Synack Attack Surface Discovery alternatives These 8 solutions overlap most with Synack Attack Surface Discovery. Each one says what the product does and, when the overlap is big enough, which capabilities it shares. ### 1. [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev) Fast Certificate Transparency search and JSON API for subdomain reconnaissance. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: Real-time Certificate Transparency Search, Automated Subdomain Enumeration, High-Performance REST JSON API, Wildcard & Fingerprint Matching, SSL/TLS Certificate History Tracking [ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev) · [Synack Attack Surface Discovery vs ctlogs.dev](https://cybersectools.com/compare/ctlogsdev-vs-synack-attack-surface-discovery) ### 2. [Mandiant Attack Surface Management](https://cybersectools.com/tools/mandiant-attack-surface-management) Discovers and monitors external internet assets for exposures and vulnerabilities [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Mandiant Attack Surface Management page](https://cybersectools.com/tools/mandiant-attack-surface-management#features). [Mandiant Attack Surface Management alternatives](https://cybersectools.com/alternatives/mandiant-attack-surface-management) · [Synack Attack Surface Discovery vs Mandiant Attack Surface Management](https://cybersectools.com/compare/mandiant-attack-surface-management-vs-synack-attack-surface-discovery) ### 3. [DNS Assistant](https://cybersectools.com/tools/dns-assistant) DNS posture mgmt platform for real-time DNS & WHOIS change monitoring. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [DNS Assistant page](https://cybersectools.com/tools/dns-assistant#features). [DNS Assistant alternatives](https://cybersectools.com/alternatives/dns-assistant) · [Synack Attack Surface Discovery vs DNS Assistant](https://cybersectools.com/compare/dns-assistant-vs-synack-attack-surface-discovery) ### 4. [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management) Cloud platform for continuous visibility & mgmt of external attack surfaces [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Outpost24 External Attack Surface Management page](https://cybersectools.com/tools/outpost24-external-attack-surface-management#features). [Outpost24 External Attack Surface Management alternatives](https://cybersectools.com/alternatives/outpost24-external-attack-surface-management) · [Synack Attack Surface Discovery vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/outpost24-external-attack-surface-management-vs-synack-attack-surface-discovery) ### 5. [StrikeOne Attack Surfa](https://cybersectools.com/tools/strikeone-attack-surfa) AI-powered attack surface management platform for cybersecurity monitoring [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 5 listed. See them on the [StrikeOne Attack Surfa page](https://cybersectools.com/tools/strikeone-attack-surfa#features). [StrikeOne Attack Surfa alternatives](https://cybersectools.com/alternatives/strikeone-attack-surfa) · [Synack Attack Surface Discovery vs StrikeOne Attack Surfa](https://cybersectools.com/compare/strikeone-attack-surfa-vs-synack-attack-surface-discovery) ### 6. [Hadrian Agentic AI](https://cybersectools.com/tools/hadrian-agentic-ai) AI-powered platform for continuous attack surface discovery and pentesting [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Hadrian Agentic AI page](https://cybersectools.com/tools/hadrian-agentic-ai#features). [Hadrian Agentic AI alternatives](https://cybersectools.com/alternatives/hadrian-agentic-ai) · [Synack Attack Surface Discovery vs Hadrian Agentic AI](https://cybersectools.com/compare/hadrian-agentic-ai-vs-synack-attack-surface-discovery) ### 7. [Microsoft Defender EASM](https://cybersectools.com/tools/microsoft-defender-external-attack-surface-management) Discovers and monitors external-facing assets and vulnerabilities [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Microsoft Defender EASM page](https://cybersectools.com/tools/microsoft-defender-external-attack-surface-management#features). [Microsoft Defender EASM alternatives](https://cybersectools.com/alternatives/microsoft-defender-external-attack-surface-management) · [Synack Attack Surface Discovery vs Microsoft Defender EASM](https://cybersectools.com/compare/microsoft-defender-external-attack-surface-management-vs-synack-attack-surface-discovery) ### 8. [Halo Security Attack Surface Management](https://cybersectools.com/tools/halo-security-attack-surface-management) External attack surface mgmt platform for discovering & monitoring assets [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Halo Security Attack Surface Management page](https://cybersectools.com/tools/halo-security-attack-surface-management#features). [Halo Security Attack Surface Management alternatives](https://cybersectools.com/alternatives/halo-security-attack-surface-management) · [Synack Attack Surface Discovery vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-synack-attack-surface-discovery) ## The closest 48 products like Synack Attack Surface Discovery The 8 above, plus: - [Assetnote ASM](https://cybersectools.com/tools/assetnote-asm): External attack surface management platform with continuous asset discovery (Commercial) - [Censys Attack Surface Management](https://cybersectools.com/tools/censys-attack-surface-management): Internet intelligence platform for asset discovery and attack surface mapping (Commercial) - [Risksurface](https://cybersectools.com/tools/risksurface): SaaS platform for attack surface management and vulnerability detection (Commercial) - [QuimeraX External Attack Surface Management](https://cybersectools.com/tools/quimerax-external-attack-surface-management): EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities (Commercial) - [RiskXchange Attack Surface Management](https://cybersectools.com/tools/riskxchange-attack-surface-management): Attack surface management platform for monitoring vulnerabilities and breaches (Commercial) - [ImmuniWeb® Discovery](https://cybersectools.com/tools/immuniweb-discovery): 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. (Commercial) - [Pentera Surface](https://cybersectools.com/tools/pentera-surface): External attack surface mgmt with automated pentesting and validation (Commercial) - [SOC Radar Attack Surface Management](https://cybersectools.com/tools/soc-radar-attack-surface-management): SOCRadar Attack Surface Management is an EASM platform that continuously discovers, monitors, and assesses internet-facing digital assets for vulnerabilities and security risks. (Commercial) - [Matos Automated Attack Surface Management](https://cybersectools.com/tools/cloudmatos-automated-attack-surface-management): Automated ASM tool for multi-cloud environments with continuous asset discovery (Commercial) - [Palo Alto Networks Cortex Xpanse](https://cybersectools.com/tools/palo-alto-networks-cortex-xpanse): Active attack surface mgmt solution for discovering & remediating unknown risks (Commercial) - [Censys Internet Intelligence Platform](https://cybersectools.com/tools/censys-internet-intelligence-platform): Internet intelligence platform for asset discovery and threat analysis (Commercial) - [Anomali Attack Surface Management](https://cybersectools.com/tools/anomali-attack-surface-management): External attack surface management platform for asset discovery and vuln mgmt (Commercial) - [Siemba EASM](https://cybersectools.com/tools/siemba-easm): AI-driven EASM platform for discovering and monitoring external-facing assets (Commercial) - [CyberXTron ShadowSpot](https://cybersectools.com/tools/cyberxtron-shadowspot): External attack surface management platform for asset discovery and risk detection (Commercial) - [Axur Unified EASM + CTI](https://cybersectools.com/tools/axur-unified-easm-cti): EASM platform with integrated CTI for asset discovery and vulnerability mgmt (Commercial) - [GoSecure Titan® Attack Surface Management](https://cybersectools.com/tools/gosecure-titanr-attack-surface-management): Discovers, monitors, and assesses external attack surface assets continuously. (Commercial) - [NetSPI External Attack Surface Management (EASM)](https://cybersectools.com/tools/netspi-external-attack-surface-management-easm): Continuous discovery, monitoring, and testing of external assets and exposures (Commercial) - [Orpheus External Attack Surface Management](https://cybersectools.com/tools/orpheus-external-attack-surface-management): EASM platform with continuous asset discovery and threat intelligence context (Commercial) - [Trickest ASM - Attack Surface Management](https://cybersectools.com/tools/trickest-asm-attack-surface-management): Customizable ASM platform for asset discovery, monitoring, and enrichment (Commercial) - [Criminal IP Security Scanning Service](https://cybersectools.com/tools/criminal-ip-security-scanning-service): Internet-connected asset search engine with vulnerability scanning capabilities (Commercial) - [CyCognito EASM Platform](https://cybersectools.com/tools/cycognito-easm-platform): EASM platform that discovers, attributes, and actively validates external assets and risks (Commercial) - [ThreatMon Attack Surface Intelligence](https://cybersectools.com/tools/threatmon-attack-surface-intelligence): Attack surface management platform for asset discovery and vulnerability monitoring (Commercial) - [FortifyData Attack Surface Management](https://cybersectools.com/tools/fortifydata-attack-surface-management): ASM platform for discovering, monitoring, and prioritizing external/internal assets (Commercial) - [Intel 471 Cyber Threat Exposure](https://cybersectools.com/tools/intel-471-cyber-threat-exposure): CTI-driven external attack surface mgmt with threat exposure prioritization (Commercial) - [Searchlight Exposure](https://cybersectools.com/tools/assetnote-attack-surface-management-tool): ASM platform that scans external attack surfaces hourly for vulnerabilities (Commercial) - [Ivanti Neurons for EASM](https://cybersectools.com/tools/ivanti-neurons-for-easm): Cloud-based EASM platform for discovering internet-facing assets & exposures (Commercial) - [Strobes Attack Surface Management](https://cybersectools.com/tools/strobes-attack-surface-management): Platform for continuous attack surface discovery, monitoring, and remediation (Commercial) - [Check Point Attack Surface Management](https://cybersectools.com/tools/check-point-attack-surface-management): Continuously maps digital footprint, identifies exposures & validates exploitability (Commercial) - [CyCraft XCockpit EASM](https://cybersectools.com/tools/cycraft-xcockpit-easm): External attack surface management platform with AI-powered risk assessment (Commercial) - [Edgescan Attack Surface Management (ASM)](https://cybersectools.com/tools/edgescan-attack-surface-management-asm): External attack surface management platform for asset discovery and monitoring (Commercial) - [SecurityScorecard External Attack Surface Management](https://cybersectools.com/tools/securityscorecard-external-attack-surface-management): Monitors external attack surface to identify assets and vulnerabilities (Commercial) - [UpGuard Breach Risk](https://cybersectools.com/tools/upguard-breach-risk): External attack surface monitoring with threat intel and brand protection (Commercial) - [Group-IB Attack Surface Management](https://cybersectools.com/tools/group-ib-attack-surface-management): External attack surface management platform with threat intelligence (Commercial) - [Dreamlab CyObs](https://cybersectools.com/tools/dreamlab-cyobs): Real-time attack surface monitoring and vulnerability management platform (Commercial) - [RiskProfiler - Attack Surface Management](https://cybersectools.com/tools/riskprofiler-attack-surface-management): AI-powered EASM platform for discovering and prioritizing external risks (Commercial) - [Aleph Search](https://cybersectools.com/tools/aleph-search-clear): OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web. (Commercial) - [Coinnect EASM Platform](https://cybersectools.com/tools/coinnect-easm-platform): EASM platform for continuous external attack surface discovery and risk mgmt. (Commercial) - [Salience xASM](https://cybersectools.com/tools/salience-xasm): xASM platform covering external, internal, and API attack surfaces. (Commercial) - [Muscope|Risk - Attack Perimeter](https://cybersectools.com/tools/muscopeorrisk-attack-perimeter): Maps external attack surface including assets, dark web exposure, and leaks. (Commercial) - [Cyber Exposure Manager](https://cybersectools.com/tools/galileo-security): Cyber Exposure Manager: continuous visibility and remediation for external risk (Commercial) ## Alternatives to each of these [ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev) · [Mandiant Attack Surface Management alternatives](https://cybersectools.com/alternatives/mandiant-attack-surface-management) · [DNS Assistant alternatives](https://cybersectools.com/alternatives/dns-assistant) · [Outpost24 External Attack Surface Management alternatives](https://cybersectools.com/alternatives/outpost24-external-attack-surface-management) · [StrikeOne Attack Surfa alternatives](https://cybersectools.com/alternatives/strikeone-attack-surfa) · [Hadrian Agentic AI alternatives](https://cybersectools.com/alternatives/hadrian-agentic-ai) · [Microsoft Defender EASM alternatives](https://cybersectools.com/alternatives/microsoft-defender-external-attack-surface-management) · [Halo Security Attack Surface Management alternatives](https://cybersectools.com/alternatives/halo-security-attack-surface-management) · [Assetnote ASM alternatives](https://cybersectools.com/alternatives/assetnote-asm) · [Censys Attack Surface Management alternatives](https://cybersectools.com/alternatives/censys-attack-surface-management) · [Risksurface alternatives](https://cybersectools.com/alternatives/risksurface) · [QuimeraX External Attack Surface Management alternatives](https://cybersectools.com/alternatives/quimerax-external-attack-surface-management) ## Other Synack products [Synack Managed VDP alternatives](https://cybersectools.com/alternatives/synack-managed-vdp) · [Synack Sara alternatives](https://cybersectools.com/alternatives/synack-agentic-ai) · [Synack Vulnerability Disclosure Program alternatives](https://cybersectools.com/alternatives/synack-vulnerability-disclosure-program) · [Synack Vulnerability Management Solutions alternatives](https://cybersectools.com/alternatives/synack-vulnerability-management-solutions) ## Compare Synack Attack Surface Discovery with - [Synack Attack Surface Discovery vs ctlogs.dev](https://cybersectools.com/compare/ctlogsdev-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs Mandiant Attack Surface Management](https://cybersectools.com/compare/mandiant-attack-surface-management-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs DNS Assistant](https://cybersectools.com/compare/dns-assistant-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/outpost24-external-attack-surface-management-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs StrikeOne Attack Surfa](https://cybersectools.com/compare/strikeone-attack-surfa-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs Hadrian Agentic AI](https://cybersectools.com/compare/hadrian-agentic-ai-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs Microsoft Defender EASM](https://cybersectools.com/compare/microsoft-defender-external-attack-surface-management-vs-synack-attack-surface-discovery) - [Synack Attack Surface Discovery vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-synack-attack-surface-discovery) ## Synack Attack Surface Discovery Alternatives FAQ ### What are the closest 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. ### How many alternatives to Synack Attack Surface Discovery are available? 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. ### Is Synack Attack Surface Discovery free or commercial? 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. ### What type of solution is Synack Attack Surface Discovery? 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. --- Source: https://cybersectools.com/alternatives/synack-attack-surface-discovery For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any product or compare page has a Markdown copy too (add .md to its URL). More on Synack Attack Surface Discovery and its alternatives: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=alternatives-md