Co-Brain Questionnaire Agent vs Doppel agentic social engineering defense
Quick answer
Co-Brain Questionnaire Agent (security questionnaire automation) (Co-Brain (Co-Brain GmbH)) and Doppel agentic social engineering defense (Email Security, Phishing Triage and agentic takedowns) (Doppel (Doppel Inc.)) are both listed in the Security category of Agent Index.
They share no framework tags in our dataset.
This is not a ranking.
Co-Brain Questionnaire Agent (security questionnaire automation) (Co-Brain (Co-Brain GmbH)) and Doppel agentic social engineering defense (Email Security, Phishing Triage and agentic takedowns) (Doppel (Doppel Inc.)) are both listed in the Security category of Agent Index. They share no framework tags in our dataset. Only Co-Brain Questionnaire Agent (security questionnaire automation) is tagged for DORA.
| Field |  Co-Brain Questionnaire Agent (security questionnaire automation) |  Doppel agentic social engineering defense (Email Security, Phishing Triage and agentic takedowns) |
|---|---|---|
| Vendor | Co-Brain (Co-Brain GmbH) | Doppel (Doppel Inc.) |
| HQ | Germany · Europe | United States · North America |
| Primary category | Security | Security |
| Also listed in | Security, Compliance, Risk | Security |
| Summary | German agent that completes incoming security questionnaires (vendor assessments, TISAX, ISO 27001, DORA) in Excel, PDF, Word or vendor portals from the customer's policies, certificates and past answers, with a source citation on every answer, consistent answers to re-worded questions, expert routing and team approval. | Social engineering defense platform where AI agents triage employee-reported phishing, remove malicious mail automatically, tune email detection policies and trace phishing back to its sending infrastructure and links to execute takedowns, alongside brand-impersonation takedowns across web, social, ads and app stores. |
| Frameworks (vendor-stated) | DORA | — |
| Frameworks (vendor-claimed) | TISAX, ISO 27001, DORA, GDPR | — |
| Capabilities / tasks | questionnaire automation, workflow automation | email security, phishing triage, threat intelligence, threat detection, remediation |
| Pricing (as published) | Not published | Not published |
| Pricing model | quote | quote |
| Primary source | https://co-brain.ai/en/questionnaire-agent | https://www.doppel.com/product/email-security |
| Last checked | 2026-10-19 | 2026-10-18 |
| Official site | https://co-brain.ai/en/questionnaire-agent | https://www.doppel.com/product/email-security |
FAQ (from this dataset)
What is the difference between Co-Brain Questionnaire Agent and Doppel agentic social engineering defense?
Both are listed under Security. They share no task tags in this dataset. Co-Brain Questionnaire Agent-only tasks: questionnaire-automation, workflow-automation. Doppel agentic social engineering defense-only tasks: email-security, phishing-triage, threat-intelligence, threat-detection, remediation. Differences are from stored category and task tags, not a ranking.
Which one publishes pricing?
Co-Brain Questionnaire Agent (security questionnaire automation): Not published Doppel agentic social engineering defense (Email Security, Phishing Triage and agentic takedowns): Not published
Where are Co-Brain Questionnaire Agent and Doppel agentic social engineering defense headquartered?
Co-Brain Questionnaire Agent (security questionnaire automation) publishes HQ in Germany. Doppel agentic social engineering defense (Email Security, Phishing Triage and agentic takedowns) publishes HQ in United States.
Also in this use case
Other verified listings that share a task tag or use-case group with Co-Brain Questionnaire Agent (security questionnaire automation) or Doppel agentic social engineering defense (Email Security, Phishing Triage and agentic takedowns). Open a pair page or the use-case table — this is not a ranking.
- Covasant TPRM (agentic third-party risk management) — Third-party risk product from Hyderabad-headquartered Covasant. Purpose-built AI agents onboard vendors through due-diligence workflows, chase vendors who are slow to respond, keep watching news, sanctions and financial data, and, when risk thresholds break, open remediation workflows, track vendor responses, escalate unresolved issues and produce DORA, SOX and NIST reporting packages.
- trail Governance Agents (GRC and AI governance agents) — Munich-based trail's Governance Agents run GRC busywork in the background: they read your project files and sources to collect and link evidence, assess controls, classify systems, run risk and vendor assessments and draft policies, proposing changes that a human approves before anything is written.
Use-case comparisons
- Email security and phishing-response AI agents — 16 listings (Triage of user-reported phishing, autonomous email threat remediation and AI-run phishing simulation)
- TPRM and vendor-risk AI agents — 40 listings (Third-party risk, vendor assessments, security ratings and questionnaire automation)
- Security questionnaire AI agents — 10 listings (Inbound security questionnaires, SIG/CAIQ-style responses and questionnaire automation)
Related
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