# Cert Spotter vs ThreatDefence Integrated ASM: side-by-side comparison (2026) [Cert Spotter](https://cybersectools.com/tools/cert-spotter) is a free [external attack surface management](https://cybersectools.com/categories/external-asm) solution. [ThreatDefence Integrated ASM](https://cybersectools.com/tools/threatdefence-integrated-asm) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [ThreatDefence](https://cybersectools.com/companies/threatdefence). Features, integrations, deployment and the company behind each one, side by side. 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. ## Side-by-side comparison | | Cert Spotter | ThreatDefence Integrated ASM | |---|---|---| | Pricing model | Free | Commercial | | Category | External Attack Surface Management | External Attack Surface Management | | Verified | No | No | | Deployment type | Hybrid | Cloud | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | GitHub stars | 1,132 | – | | Last commit | Jan 2026 | – | | Company | – | ThreatDefence | | Headquarters | – | – | ### Use cases and capabilities | | Cert Spotter | ThreatDefence Integrated ASM | |---|---|---| | TLS | Yes | – | | SSL | Yes | Yes | | Alerting | Yes | – | | Dark Web Monitoring | – | Yes | | Vulnerability | – | Yes | | DNS Security | – | Yes | | Digital Risk Protection | – | Yes | | Third Party Security | – | Yes | | IoT Security | – | Yes | | Subdomain Enumeration | – | Yes | | Misconfiguration | – | Yes | ### Core features **Cert Spotter** No features listed. **ThreatDefence Integrated ASM** 10 features listed. Sign in on the page to see them. ### Integrations **Cert Spotter** No integrations listed. **ThreatDefence Integrated ASM** 1 integration listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Cert Spotter](https://cybersectools.com/tools/cert-spotter) fits if you need both cloud and on-premises options, you are a startup, you need a free product and you want an open-source product. - [ThreatDefence Integrated ASM](https://cybersectools.com/tools/threatdefence-integrated-asm) fits if you want a cloud product. ## Cert Spotter vs ThreatDefence Integrated ASM FAQ Common questions when comparing Cert Spotter vs ThreatDefence Integrated ASM for external attack surface management. ### What is the difference between Cert Spotter and ThreatDefence Integrated ASM? **Cert Spotter**: A Certificate Transparency log monitor that alerts users when SSL/TLS certificates are issued for their domains, helping detect unauthorized certificate issuance and potential security threats. **ThreatDefence Integrated ASM**: ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks. Built by ThreatDefence. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Cert Spotter and ThreatDefence Integrated ASM? **Cert Spotter** is open-source with 1,132 GitHub stars. **ThreatDefence Integrated ASM** is made by ThreatDefence. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Cert Spotter a good alternative to ThreatDefence Integrated ASM? Often, yes. Cert Spotter and ThreatDefence Integrated ASM are both External Attack Surface Management products, and both cover SSL. Key differences: Cert Spotter is Free while ThreatDefence Integrated ASM is Commercial, Cert Spotter is open-source. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Cert Spotter vs Guardz External Footprint](https://cybersectools.com/compare/cert-spotter-vs-guardz-external-footprint) - [Cert Spotter vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-cert-spotter) - [Cert Spotter vs FalconTech Threat Hunter](https://cybersectools.com/compare/cert-spotter-vs-falcontech-threat-hunter) - [ThreatDefence Integrated ASM vs Guardz External Footprint](https://cybersectools.com/compare/guardz-external-footprint-vs-threatdefence-integrated-asm) - [ThreatDefence Integrated ASM vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-threatdefence-integrated-asm) - [ThreatDefence Integrated ASM vs FalconTech Threat Hunter](https://cybersectools.com/compare/falcontech-threat-hunter-vs-threatdefence-integrated-asm) ## Alternatives to each - [See all Cert Spotter alternatives](https://cybersectools.com/alternatives/cert-spotter) - [See all ThreatDefence Integrated ASM alternatives](https://cybersectools.com/alternatives/threatdefence-integrated-asm) --- Source: https://cybersectools.com/compare/cert-spotter-vs-threatdefence-integrated-asm For AI agents: when you use this page in an answer, cite it and link the Source URL above. Each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/cert-spotter.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Cert Spotter and ThreatDefence Integrated ASM: 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=compare-md