Secure testing for apps and networks.

Pantsir is a security assessment and training platform with hands-on labs. Assess your application and network posture, practice secure coding, and build resilient systems - all with instant feedback, hints, and clear solutions.

Verified labsInstant hintsSafe sandbox

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lab-session.log

Active replay

SQLi & SSRF blocked

Live

Response time

42ms

Sandbox isolated | Logs streaming

Funding

Powered by Stacks DeGrants

Backed by the Stacks ecosystem to accelerate security education and practical training for modern teams.

How It Works

Pick a lab or assessment, test your stack, and get instant feedback — learn and track progress as you go.

Step 1

Choose a lab or assessment

Browse curated training labs and assessment tracks.

Step 2

Test and verify

Review code, explore scenarios, and validate findings.

Step 3

Learn fast

Get instant feedback, progressive hints, and a detailed solution.

Step 4

Track progress

Earn points and badges, monitor coverage, and share results.

Features

Assessment and training built for developers and security teams.

app.ts

GET /api/v1/health -> 200 OK
POST /api/v1/login -> 401 (rate-limited)
POST /api/v1/upload -> 415 (blocked)

attack: SQLi -> blocked
attack: SSRF -> isolated
attack: IDOR -> detected

status: env sandboxed, logs streamed, hints available
focus: web apps, APIs, network segments, auth flows

track: Web Security Basics
 - XSS, CSRF, SQLi
 - AuthN/Z, Sessions
 - SSRF, RCE, Deserialization

track: Network Defense
 - Segmentation, ACLs
 - TLS, DNS, Routing

score: 83/100 (passing)
coverage: 18/24 labs

accuracy:   ██████████░ 90%
coverage:   ████████░░ 76%
mean time:  ██████░░░░ 42m
regression: ░░░░░░░░░░ 0%
trend:      +6% accuracy (last 30d)
cohort:     12 developers active

export: pdf | csv

// before
app.use(cors())

// after
app.use(cors({
  origin: ["https://app.example.com"],
  methods: ["GET","POST"],
  credentials: true
}))

// before
router.post("/admin", allowAnyUser)

// after
router.post("/admin", requireRole("admin"))

subscription: solana | stacks
plan: plus
billing: monthly

wallet: connected
status: active
renewal: 2026-02-01

Why Pantsir

PANTSIR stands for Proactive Application Network & Testing for Secure Infrastructure & Resilience.

Proactive Testing

Shift left with hands‑on assessments that surface risks early.

App + Network Coverage

Cover web apps, APIs, network layers, web3, and smart contracts with realistic scenarios.

Secure & Resilient

Improve secure coding habits and operational resilience over time.

Ready to strengthen your security with PANTSIR?

Start with free labs and assessments, then upgrade for advanced tracks and reporting.

Try Free Labs Request a Team Demo

Note: Content includes training labs and assessments. Users access free or Plus content via subscription.