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AI-Native DAST

Drop a URL. Find out what an attacker would actually find

Most DAST scanners stop at your login page and call everything behind it clean. Siemba's AI-Native dynamic application security testing (DAST) tool authenticates, attacks the workflows your users actually reach, and hands you the proof.

SOC 2 Type II Certified G2 rating 4.7 out of 5 stars Gartner Hype Cycle 2026 LPT certified eCPPTPT certified
live test run
Test cases run
2,847
Critical
3
High
9
First finding
4m12s
findings as they land
CRITIDOR · GET /api/v1/invoices/{id} · curl repro attached4m
CRITSQLi · POST /search · behind MFA login11m
HIGHSSRF · /webhook/validate · internal metadata reachable18m
AUTHSession authenticated as billing_admin · screenshot captured1m
WAFRate limiter blocking payloads, run failed, not reported clean22m
We Map Webapps API Subdomain Cloud host Mobile LLM apps AI agents
Trusted by security teams at

Most DAST scanners never make it past your login page

A conventional DAST tool or vulnerability scanner crawls what it can reach without credentials, stalls at your OTP prompt, never sees the authenticated workflows where your business logic lives, and returns no criticals. To anyone who did not run it, that reads exactly like a clean result. A rate limiter can block every payload you send and the run will still finish quietly.

The blind spot

Unauthenticated coverage on an authenticated application tests your marketing pages and reports on your product.

The false all-clear

A run blocked by a firewall that completes anyway is worse than no run, because now you believe something.

What you get

A URL in, first finding in minutes, authenticated behind MFA with no login script, access control tested from your API spec, and a run that tells you the moment a firewall intervenes.

From first request to a release you can ship

Seven stages, each one picking up where the last left off. Jump to any of them.

1Start

One click. A URL is the whole setup

Give it a URL or an IP. It fingerprints your stack, builds a suite for it, and starts.

Minutes
To first finding
33,000+
Test cases available
0
Setup, scripts or config
Daily to monthly
Batch scheduling, or on demand
  • A URL is the whole input. No install, no build step, no security expertise to run it.
  • Technology-aware test selection. Precise payloads matched to your stack, not generic scanning.
  • 33,000+ payload-based test cases. Web application coverage plus the latest CVEs.
  • Express or site-wide, authenticated or not. Tag a run for a fast targeted pass or full site-wide coverage, unauthenticated or behind a login, and filter your test history the same way later.
  • Batch testing and scheduling. Many applications in one run, daily, weekly or monthly.
  • Every phase logged, live. Asset selection, tech stack analysis, test case curation, CVE analysis, credential checks, SSL/TLS review and de-duplication, each timestamped as it runs, not summarised after the fact.
Test your first app free
test run
Targetapp.acme.io
Asset criticalityMission Critical
ExposureExternal
TagsAuth · Express
FingerprintedReact 18 · Node 20
Suite selected2,847 of 33,000+
First finding00:04:12
2Authenticate

Test the part of your application that actually matters

No recorded login script to build or re-record. A screenshot proves the session authenticated before testing began.

MFA / OTP
Handled, no script
SPA
JavaScript-heavy crawling
Screenshot
Proof of authenticated session
  • OTP, MFA, simple CAPTCHA and custom forms. Worked through automatically, no script to maintain.
  • Modern application crawling. React, Vue, Angular and other JavaScript-heavy single-page apps.
  • Token validated before the run starts. A run on stale credentials cannot return a clean report.
  • Credentials encrypted at rest. Used only for authenticated scans.
authentication proof
OTP challengesolved
CAPTCHAsolved (simple)
Login script requirednone
Session rolebilling_admin
Screenshot capturedbefore first payload
Token pre-validatedyes
3Authorise

Prove user A can’t read user B’s invoice

IDOR testing shouldn't need a security engineer to write it. Give Siemba your API spec and two IDs, one record the user owns, one they don't, and every endpoint with an ID-like parameter gets tested automatically.

Spec + 2 IDs
All the input required
curl
Repro command on every hit
A01
CWE-639 and WASC tagged automatically
  • AI candidate identification. Your API spec or collection is read automatically, and every endpoint with an ID-like parameter is surfaced as a candidate for access-control testing, grouped by object, with no manual mapping.
  • You supply your API spec and two IDs per parameter. One record the user owns, one they should not reach. No test-writing.
  • High-impact parameters flagged. Leave one blank and every endpoint needing it is skipped, not reported clean.
  • Full write-up on every hit. Curl command, repro steps, CWE-639, OWASP A01 and WASC classification.
See full API security testing →
access control test
EndpointGET /api/v1/invoices/{id}
ALLOWED idinv_8871
NOT ALLOWED idinv_4412
Response200 OK
VerdictVULNERABLE
Reprocurl attached
TaggedCWE-639 · A01 · WASC-42
4Cover the API

One collection URL. Every endpoint in it, tested

One collection URL in. REST, GraphQL and SOAP, each tested on its own terms rather than one generic pass.

REST · GraphQL · SOAP
All covered
Live
Firewall evasion detection
Every endpoint
In the collection you supply
  • Every endpoint in your collection tested. Broken down by protocol and HTTP method.
  • Injection, data exposure and access-control gaps. The classes conventional scanners consistently miss.
  • XSS, SQLi, SSRF, broken access control and authentication flaws. Plus the latest CVEs.
  • OWASP Top 10 and OWASP API Security coverage. Mapped automatically.
See full API security testing →
api coverage
Input1 collection URL
Endpoints in collection214
REST168
GraphQL39
SOAP7
Rate limiter detected00:18, run failed
Business scenario testing

Tested as a workflow, not endpoint by endpoint

Checkout, refunds, approvals: multi-step business logic is tested as a full sequence, the way a real user or attacker actually moves through it, not as isolated calls that each look fine on their own.

5Evasion detection

A blocked run fails. It does not report clean

Network responses are monitored throughout every test. The moment a firewall or rate limiter starts dropping payloads, the run is flagged and marked failed, not silently completed.

4
Throttle modes: Stealth, Standard, Turbo, Custom
Live
Firewall and rate-limit monitoring
0
Silent false all-clears
  • Continuous response monitoring. Every request and response watched for signs of blocking, not just the final report.
  • Switch throttle mode mid-run. Move from Stealth to Turbo, or back, without restarting the test.
  • Blocked runs are marked failed. A run interrupted by a WAF or rate limiter is never reported as clean.
  • Matches your environment's limits. Adjust throttle to your actual rate limits and go again without losing progress.
evasion check
Throttle modeStandard
Payloads sent1,204
Rate limiter detected00:18
Run statusFAILED, not reported clean
Actionswitch to Stealth, re-run
6AI surfaceAutonomous testing coming soon

Your MCP servers are live endpoints with an unaudited auth model

MCP servers wired to internal tools and data are production endpoints, with an authorisation model nobody has audited. Register and track them alongside your APIs and web apps.

  • Registered like any other asset. Endpoint URL plus a criticality tier, in the same inventory and filters.
  • Inherits your API coverage. No separate motion to set up.
  • Testing is expert-led today. Tool poisoning, over-permissioning, unauthorised invocation, secrets exposure.
  • The wider AI surface too. Prompt injection, jailbreaks, agentic privilege escalation, RAG leakage and the OWASP LLM Top 10.

Planning around autonomous MCP testing? Talk to us about timing.

Expert-led AI and MCP testing
mcp asset
Nameinternal-tools-mcp
Endpointmcp.acme.io
Asset typeMCP server
CriticalityMission Critical
Coverageinherits API
Testing modelexpert-led today
7Ship

Block the vulnerability before it reaches staging

Wire it into your pipeline once. Generate an API key, drop it into Jenkins, GitLab or GitHub Actions, and every build is tested and gated against your severity threshold before it ships.

3
Native pipeline gates
Same day
Scan to GitHub issue
30 days
Freeze window, max
  • Build gates for Jenkins, GitLab and GitHub Actions. Set a severity threshold, any build crossing it is blocked.
  • Native GitHub issues. Opened the day a finding is detected, with full context.
  • Jira, ServiceNow and Slack routing. Single sign-on through Okta.
  • Freeze windows up to 30 days. It pauses itself and switches back on without a ticket.
pipeline gate
Thresholdfail on High+
Build#4412
ResultBLOCKED
Findings1 high
GitHub issue#892 opened
Time to engineersame day

Retest as often as you like, with no window that closes on you

Re-run a test as often as you need, and anything that reappears is flagged, not logged as a fresh finding. Marking a false positive takes written justification and evidence, matched on title plus the exact endpoint and parameters. Defer a finding for 30, 60, 90 days or a custom date, and it returns to view automatically when that date passes, tracked in its own list rather than buried in the queue.

OpenFinding confirmedEvidence, request and response, proof of concept attached.
Retest readyYou mark the fixThe next run confirms it. No limit on runs.
Retest passedProven, not assumedReappearance flagged Re-Opened, not logged as new.

AISO™ reads the backlog before you do

Discovery finds the assets. AISO writes the decisions: what is exposed now, what is about to break, and where remediation is slipping.

Your AI Security Officer, offering real-time insights and risk-based decision support.

Medium Priority
8
Imminent SSL/TLS Certificates Expiry

8 SSL/TLS certificates will expire in the next 30 days, which could lead to service disruptions and security risks.

High Priority
22
Inefficiencies in Vulnerability Remediation Cycles

MTTR for certain critical vulnerabilities exceeds 7 days, indicating inefficiencies in your current remediation process.

High Priority
10
Unrestricted Hacker Access Through Unpatched Exploits

10 vulnerabilities allow unauthenticated exploitation and have public exploits already available.

High Priority
7
Zero-Day Vulnerabilities Jeopardize Security

Multiple unpatched vulnerabilities could grant attackers unauthorized access to critical systems.

Critical
12
Vulnerabilities Lacking Patches Pose Immediate Risk

Active vulnerabilities identified with no patch currently available, increasing your attack surface.

Low Priority
5
Vulnerabilities Enable Lateral Movement or Privilege Escalation

A number of new vulnerabilities allow lateral movement across systems and privilege escalation.

INTEGRATIONS

Fits into the stack you already run.

Jira
ServiceNow
Slack
GitHub
Okta SSO
Qualys
View all

Detailed for an engineer to fix it and an auditor to accept it

Autonomous and manual findings land in one list, each labelled with its source. How findings are scored, mapped and managed →

CVSS v4.0 and Likelihood

Full vectors on CVE-anchored findings, plus a plain-English likelihood call on every finding.

DREAD

Scored independently across all five dimensions.

Nine compliance mappings

OWASP, NIST 800-53 Rev.5, PCI DSS v4.0.1, MITRE ATT&CK, CWE, GDPR, HIPAA, ISO 27001:2022, CMMC.

Full request and response

In a code block, beside the score.

Proof of concept and repro steps

Including a curl command on access-control findings.

Impact and remediation guidance

What to fix, and what to do if a fix has to wait.

Executive and technical export

Leadership summary and engineer detail in one report.

Firewall interference alerts

Told during the run, not discovered afterwards.

Verified closure record

Status history and retest evidence, so a fix is provable.

Business Risk Score

One number per finding, factoring exploitability and business impact, not severity alone.

CVE ID matching

Findings matched against known CVEs automatically, so a known exploit is never buried in the list.

Severity and status trends

New, existing, re-opened and fixed, tracked quarter over quarter, not just as a snapshot.

How this compares with the DAST scanner you are evaluating against

Conventional dynamic scanner Annual pentest Siemba autonomous testing
Setup Recorded login scripts, per-app config Scoping call, statement of work, wait A URL
Authenticated coverage Breaks on OTP and MFA; often runs unauthenticated Yes, manually OTP, MFA, simple CAPTCHA and single-page apps, no script, with screenshot proof of session
Object-level access control Rarely: needs test cases a human writes Yes, by hand, expensively Automated from your API spec plus two IDs, curl repro on every hit
API coverage One generic pass, no protocol-specific depth Whatever was scoped Every endpoint in your collection: REST, GraphQL and SOAP, each tested on its own terms
If a firewall blocks the run Completes, reports clean Not applicable Run fails and tells you, mid-run
Cadence Scheduled Once a year On demand, scheduled, or every deploy via the pipeline, with build gating
Scoring CVSS v3.1 Tester judgment CVSS v4.0, plus DREAD
Compliance mapping A static OWASP tag Manual OWASP, NIST 800-53, PCI DSS, MITRE ATT&CK, CWE, GDPR, HIPAA, ISO 27001 and CMMC, mapped at ingest with reasoning
Retesting Rescan and re-triage Paid add-on, or a 30 to 90-day window Unlimited re-runs, reappearance flagged
AI attack surface No Sometimes MCP as a first-class asset type; adversarial AI testing expert-led

How Siemba compares

vs other self-serve DAST tools

Comparable ease of start. The difference shows at depth: object-level access control from a spec, full protocol coverage across REST, GraphQL and SOAP, CVSS v4.0 plus DREAD scoring, nine-framework compliance mapping, and certified in-house pentesters on the same platform when automation runs out of road.

vs SAST and static analysis platforms

SAST reads code. It cannot authenticate through your MFA flow, exercise a live authorisation boundary, or tell you whether a running endpoint is actually reachable. Different tools. SAST and DAST are complementary: if you already run static analysis, authenticated DAST here covers the running application it cannot reach.

How each team uses it

Developers & QA

Validate a hotfix without waiting for an assessment

Run a test in minutes with no security expertise. Findings arrive as GitHub issues with reproduction steps, so the fix starts the same day.

A vulnerability that never merges costs nothing to fix.
AppSec & SecOps

Batch-test a portfolio, then go deep where it matters

Test dozens of applications on a schedule, with authenticated coverage and access-control testing you would otherwise write by hand.

Breadth from automation, depth from certified humans.
GRC & Leadership

Audit evidence as a by-product, not a project

Compliance mappings attached at ingest with the reasoning, one-click executive and technical reports, and a defensible closure record.

The number you report upward is the number engineers work from.
DevOps & Platform

Gate a build automatically, on your terms

Run testing on demand, on a schedule, or as a native CI/CD gate that blocks a build crossing your severity threshold, with no manual trigger to remember.

On demand, scheduled, or CI/CD gating: you choose the cadence.

The outcomes security teams get from Siemba

What teams say about working with us
★★★★★
Taught us how to think about security.
Siemba didn't just find issues, they taught us how to think about security.
Alvin Allen
Head of Cybersecurity · FRONTSTEPS
Customer
★★★★★
Powerful all-in-one solution.
Uncovered assets we missed. Risks validated in hours, not weeks.
Arun C.
Verified · G2
G2
★★★★★
Great end-to-end tool for small teams.
Structured reports within minutes. Zero heavy overhead.
Mevin B.
Verified · G2
G2
★★★★★
Great end-to-end security platform.
Immediate visibility. Speed and ease of use, all in one.
Anandu N.
Verified · G2
G2
★★★★★
"Pentesting on steroids."
Continuous, automated, and actually actionable.
Security Professional
LinkedIn Review
LinkedIn

Pricing scales with your estate, not per seat

Automated assessment, mapping and autonomous testing come on one subscription. Expert-led engagements are scoped per application.

See pricing

The questions you'll actually ask

What is DAST?

DAST, dynamic application security testing, is a black-box method that tests a running web application or API from the outside, the way an attacker would, without access to source code. A DAST tool sends real requests, including malicious payloads, and watches how the application responds to find issues like injection flaws, broken authentication and access-control gaps that only show up at runtime.

What's the difference between SAST and DAST?

SAST reads your source code looking for insecure patterns before the application ever runs. DAST tests the running application from the outside, with no visibility into the code, the way an actual attacker would reach it. SAST catches issues early in the pipeline; DAST catches the issues that only appear once code is deployed and running, including authentication and access-control flaws SAST cannot see. Most mature programmes run both.

Is DAST the same as penetration testing?

No. DAST is automated and continuous: it runs a large library of payload-based tests against a running application on demand, on a schedule, or on every deploy. A penetration test is a scoped, point-in-time engagement led by a human, who can chain findings together and reason about business logic in a way automation cannot. They are complementary rather than substitutes: DAST gives you continuous, broad coverage; a pentest gives you depth on a defined scope.

What's the difference between DAST and IAST?

DAST tests a running application from the outside, with no access to its internals. IAST (interactive application security testing) instruments the application from the inside, using an agent, and observes what happens as it runs, typically during QA or functional testing. DAST needs no agent and works against anything you can reach with a URL; IAST needs to be deployed inside the application itself but can offer more precise line-level detail on a confirmed finding.

Is it safe to run against production?

Yes. Testing is production-safe and performs no destructive tests: no denial of service, no stress testing, no brute-forcing. Runs are throttled by default, and any intrusive or potentially disruptive test happens only with your explicit written authorisation, under rules of engagement agreed beforehand. Authenticated runs that touch sensitive workflows are best pointed at staging; unauthenticated production coverage is safe either way.

What do you need from us to test authorisation and object-level access control?

Your API spec and two IDs per parameter: one record the user owns, one they should not be able to reach. OpenAPI, Swagger or Postman all work. Confirmed hits come back with a curl command, reproduction steps, and CWE-639 and OWASP A01 tags.

Does it run in our pipeline, and can a failing run block a build?

Yes to both. Native gates for Jenkins, GitLab and GitHub Actions: set a severity threshold and any build crossing it is blocked automatically. An API key connects it to your pipeline in minutes. Findings can also open as native GitHub issues the same day they are detected, with full context, so the engineer who owns the code hears about it without a copy-paste step in between.

How long does a test take, and what counts as one test run?

Small applications complete in minutes; larger and API-heavy targets take longer, and de-duplication runs on the results so you get a clean list rather than a raw dump. One test run means one authenticated or unauthenticated test against a single web application or API, and 50 runs a month are included from $1,000/month. See how runs are allocated.

Is this a replacement for a manual penetration test?

No, and anyone telling you otherwise is selling something. Autonomous testing gives you continuous coverage, breadth, and proof of exploitability across everything, on every release. Certified humans are still better at business logic, chained exploits, and adversarial AI attacks: prompt injection, agentic privilege escalation, retrieval pipeline data leakage. The useful part is that both run on one platform with one risk model, so you are not reconciling two vendors’ reports. Expert-led pentesting →

How do you handle release freezes?

Freeze windows of up to 30 days. Set one for a production freeze, a holiday sales peak or a critical release and testing pauses itself, and nobody has to remember to file a ticket, and nobody has to remember to switch it back on.

Can we run tests from our AI assistant?

Yes. The platform is available as an MCP server, so you can trigger a test, pull findings, check a run's status and ask for pattern analysis across runs from any MCP-compatible assistant. Every action is logged against the user and bounded by their existing permissions. An AI client cannot do anything off the record or outside what that person could already do.

Point it at one app. See what it finds in the next ten minutes

No card, no setup, no login script. Or book a walkthrough and we will run it against something of yours.