Claude for Security Analysts: Persistent Threat Context Without the Re-brief

Published June 2026 · 5 min read

Security work is knowledge-intensive. You're tracking dozens of CVEs, managing runbooks for twelve different environments, remembering which threat actors target your sector, and keeping mental notes on every anomaly from the last sprint. Then you open Claude to help with a triage task — and you have to re-explain all of it from scratch.

This is the persistent memory problem for cybersecurity professionals. Stash solves it: a token-light MCP store that holds your threat context, environment notes, and runbook index so Claude walks into every session already briefed.

What security analysts actually store in Stash

Common collections:

• threat_intel — active CVEs, known IOCs, threat actor TTPs relevant to your environment
• environments — network topology notes, asset owners, critical paths, known misconfigurations
• runbooks — incident response playbooks by scenario type (ransomware, credential stuffing, data exfil)
• incidents — past incident summaries, root cause, containment steps, lessons learned
• vendors — tool notes, license limits, integration quirks, support contacts

None of this is the data itself — it's the context layer. Your SIEM holds the logs. Stash holds the thinking about those logs that Claude needs to be useful in a session.

A session without Stash vs. with Stash

Without Stash:

You: Help me write a containment runbook for credential stuffing.
Claude: Sure! To tailor this, what's your environment — cloud, on-prem, hybrid?
        What authentication systems are in scope?
        Do you have MFA deployed? What IdP?
        What's your incident severity classification system?
        [five more questions]

With Stash:

You: Help me write a containment runbook for credential stuffing.
Claude: Based on your Azure AD + Okta setup (hybrid) with P1/P2/P3 severity tiers
        and MFA enforced on external access but optional on internal — here's a
        tailored runbook:

        P2 — Credential Stuffing Containment
        1. Immediately: force Okta session invalidation for affected accounts...
        [continues with your actual environment]

That shift — from interrogation to execution — compounds across every triage session, every tabletop, every policy draft.

Real patterns security teams use

Threat briefing on demand

Store notes on threat actors that target your sector. When a new campaign drops:

search threats for "APT29 phishing"

Claude retrieves your notes and connects them to the new campaign without re-reading a dozen reports you've already digested.

Incident debrief logging

After each incident, add a one-paragraph summary to your incidents collection. Three months later:

search incidents for "lateral movement"

Surfaces every time you've seen lateral movement in your environment — patterns Claude can reason about.

CVE triage context

Store your environment's exposure notes for high-priority CVEs. When the next critical drops, Claude can instantly tell you which of your assets are affected based on your previous assessments — no re-reading patch notes.

Tabletop scenario prep

context() — load my security context
"I'm running a tabletop on ransomware next week. What gaps does our runbook have
based on last year's incidents?"

What Stash is not

Stash is not a SIEM, a SOAR, or a threat intelligence platform. It doesn't ingest feeds, run correlations, or automate responses. It's a context store — the notes your brain used to hold that you now share with Claude.

Specifically: don't store raw logs, PII, or classified data in Stash. Store summaries, assessments, and reference context that's already been through your normal handling process.

Free tier is enough for most analysts

Most security context stores fit comfortably in the 2,500-record free tier. A typical setup — 50 CVE notes, 20 environment records, 30 runbook entries, 15 incident summaries, 20 vendor notes — is around 135 records. Well within free.

If you're running a large SOC with dozens of analysts sharing context, Pro (£8/month) gives you 100,000 records and 1,000 queries. Pricing may change; cancel anytime.

Setup takes four minutes

1. Sign in at stashlite.com — Google OAuth, one click
2. Copy your connector URL
3. Add it to Claude: Settings → Integrations → Add MCP server
4. Tell Claude to context() — it'll prompt you to add your first records