Microsoft Security Copilot Phishing Triage Agent (Defender) vs Plerion Pleri (AI security engineer)
Microsoft Security Copilot Phishing Triage Agent (Defender) (Microsoft) and Plerion Pleri (AI security engineer) (Plerion) are both listed in the Security category of Agent Index. They share no framework tags in our dataset.
| Field |  Microsoft Security Copilot Phishing Triage Agent (Defender) |  Plerion Pleri (AI security engineer) |
|---|---|---|
| Vendor | Microsoft | Plerion |
| HQ | United States · North America | Australia · Australia and New Zealand |
| Primary category | Security | Security |
| Also listed in | Security | Security |
| Summary | Security Copilot agent in Microsoft Defender that autonomously triages user-reported phishing, resolves false positives and explains each verdict. | Sydney-based cloud and AI security platform with Pleri, an agent that investigates findings, checks real exploitability, raises fix PRs and Jira tickets, and follows each change through to merge. |
| Framework tags (Agent Index) | — | — |
| Frameworks (vendor-claimed) | — | — |
| Capabilities / tasks | security operations, alert triage, incident response, threat detection | cloud security, vulnerability management, remediation, exposure management |
| Pricing (as published) | No standalone price. Requires Microsoft Defender for Office 365 Plan 2 plus Security Copilot security compute units (SCUs). Microsoft says Security Copilot agents are also made available to Microsoft 365 E5 customers. Check Microsoft's Security Copilot pricing for SCU rates. | Published estimator on plerion.com/pricing: a fixed monthly Plerion bill set by combined monthly AWS/Azure/GCP spend (example shown: $100,000–$130,000 cloud bill → about $3,100–$3,700/month, USD), all capabilities and the agent included; 'Start free' option. |
| Pricing model | quote | published-tiers |
| Primary source | https://learn.microsoft.com/en-us/defender-xdr/phishing-triage-agent | https://www.plerion.com/agents |
| Last checked | 2026-10-18 | 2026-10-18 |
| Official site | https://learn.microsoft.com/en-us/defender-xdr/phishing-triage-agent | https://www.plerion.com/agents |
Side-by-side data is generated from the open dataset. “Vendor-claimed” frameworks are as marketed by each vendor and not verified by Agent Index; framework tags indicate relevance, not certification. Request current quotes from each vendor before buying. This page does not rank or score vendors. Sponsored comparisons, if any, will be labelled.
Also in this use case
Other verified listings that share a task tag or use-case group with Microsoft Security Copilot Phishing Triage Agent (Defender) or Plerion Pleri (AI security engineer). Open a pair page or the use-case table — this is not a ranking.
- Attic IVON (Agentic MDR for Microsoft 365) — Dutch AI SOC agent for Microsoft 365 SMBs that triages, investigates and contains identity alerts across Defender, Sentinel and Entra ID with human sign-off. · Attic IVON (Agentic MDR for Microsoft 365) pair comparison
- Datadog Bits AI Security Analyst — AI agent in Datadog Cloud SIEM that autonomously investigates security signals and returns evidence-backed Benign or Suspicious verdicts. · Datadog Bits AI Security Analyst pair comparison
- Google Security Operations Triage and Investigation Agent — AI agent in Google Security Operations that autonomously investigates SIEM alerts and returns a verdict, confidence score, timeline and next steps. · Google Security Operations Triage and Investigation Agent pair comparison
- Maze AI Agents (Maze Cloud and Maze Code) — UK AI agents that investigate every cloud and code vulnerability with code-to-cloud context, decide exploitability and deliver fixes. · Maze AI Agents (Maze Cloud and Maze Code) pair comparison
- Reliance Cyber RADAR — UK agentic MDR platform on Google Security Operations with specialist AI agents for detection engineering, triage, response and self-healing, under human oversight. · Reliance Cyber RADAR pair comparison
- WedgeX AI SOC Agent — Australian AI SOC agent that enriches, investigates and recommends escalate/close actions on alerts, proposing containment for human approval. · WedgeX AI SOC Agent pair comparison
Use-case comparisons
- AI SOC and security-analyst agents — 26 listings (Security operations, alert investigation and threat detection)
- Cloud security (CNAPP) AI agents — 7 listings (Cloud and container security posture, exposure and remediation)
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