# Keepnet Labs Email Threat Simulator vs Nemesis: side-by-side comparison (2026) [Keepnet Labs Email Threat Simulator](https://cybersectools.com/tools/keepnet-labs-email-threat-simulator) is a commercial [breach & attack simulation](https://cybersectools.com/categories/threat-simulation) solution by [Keepnet Labs](https://cybersectools.com/companies/keepnet-labs). [Nemesis](https://cybersectools.com/tools/nemesis) is a commercial [breach & attack simulation](https://cybersectools.com/categories/threat-simulation) solution by [Nemesis by Persistent Security](https://cybersectools.com/companies/nemesis-by-persistent-security). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Keepnet Labs Email Threat Simulator | Nemesis | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Breach & Attack Simulation | Breach & Attack Simulation | | Verified | No | No | | Deployment type | Cloud | Hybrid | | Company size fit | SMB, Mid-Market, Enterprise | Startup | | Company | Keepnet Labs | Nemesis by Persistent Security | | Headquarters | – | – | ### Use cases and capabilities | | Keepnet Labs Email Threat Simulator | Nemesis | |---|---|---| | APT | Yes | – | | Misconfiguration | Yes | – | | Ransomware | Yes | – | | Continuous Testing | – | Yes | ### Core features **Keepnet Labs Email Threat Simulator** 10 features listed. Sign in on the page to see them. **Nemesis** 7 features listed. Sign in on the page to see them. ### Integrations **Keepnet Labs Email Threat Simulator** 3 integrations listed. Sign in on the page to see them. **Nemesis** 3 integrations 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. - [Keepnet Labs Email Threat Simulator](https://cybersectools.com/tools/keepnet-labs-email-threat-simulator) fits if you want a cloud product and you are a small business or a mid-market company or an enterprise. - [Nemesis](https://cybersectools.com/tools/nemesis) fits if you need both cloud and on-premises options and you are a startup. ## Keepnet Labs Email Threat Simulator vs Nemesis FAQ Common questions when comparing Keepnet Labs Email Threat Simulator vs Nemesis for breach & attack simulation. ### What is the difference between Keepnet Labs Email Threat Simulator and Nemesis? **Keepnet Labs Email Threat Simulator**: Tests email security gateways by simulating real-world email threats. Built by Keepnet Labs. **Nemesis**: AI Breach and Attack Simulation that adapts to your defences. Built by Nemesis by Persistent Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Keepnet Labs Email Threat Simulator and Nemesis? **Keepnet Labs Email Threat Simulator** is made by Keepnet Labs. **Nemesis** is made by Nemesis by Persistent Security founded in 2022-01-01T00:00:00.000Z. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Keepnet Labs Email Threat Simulator a good alternative to Nemesis? Often, yes. Keepnet Labs Email Threat Simulator and Nemesis are both Breach & Attack Simulation products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Keepnet Labs Email Threat Simulator vs AttackIQ Adversarial Exposure Validation](https://cybersectools.com/compare/attackiq-adversarial-exposure-validation-vs-keepnet-labs-email-threat-simulator) - [Keepnet Labs Email Threat Simulator vs Pentera RansomwareReady™](https://cybersectools.com/compare/keepnet-labs-email-threat-simulator-vs-pentera-ransomwarereadytm) - [Keepnet Labs Email Threat Simulator vs CovertSwarm Ransomware Attack Simulation](https://cybersectools.com/compare/covertswarm-ransomware-attack-simulation-vs-keepnet-labs-email-threat-simulator) - [Nemesis vs AttackIQ Adversarial Exposure Validation](https://cybersectools.com/compare/attackiq-adversarial-exposure-validation-vs-nemesis) - [Nemesis vs Pentera RansomwareReady™](https://cybersectools.com/compare/nemesis-vs-pentera-ransomwarereadytm) - [Nemesis vs CovertSwarm Ransomware Attack Simulation](https://cybersectools.com/compare/covertswarm-ransomware-attack-simulation-vs-nemesis) ## Alternatives to each - [See all Keepnet Labs Email Threat Simulator alternatives](https://cybersectools.com/alternatives/keepnet-labs-email-threat-simulator) - [See all Nemesis alternatives](https://cybersectools.com/alternatives/nemesis) --- Source: https://cybersectools.com/compare/keepnet-labs-email-threat-simulator-vs-nemesis 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/keepnet-labs-email-threat-simulator.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Keepnet Labs Email Threat Simulator and Nemesis: 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