Nullify
NewIntroducing Self-Healing Fixes: pull requests that update themselves until they are ready to merge.See how it works →
AI AGENTS THAT FIND AND FIX SECURITY ISSUES

The Post-Human Product Security Harness

Nullify continuously allocates AI capacity toward the highest-impact product security work, maximizing outcomes from every engineer hour and every token spent.

A figure before a vast faceted maze beneath a luminous sky

Trusted by security teams shipping at scale

DAZNFox SportsSmithRxnibMagentusLatentScrut AutomationHireup

How the Harness Works

The harness understands how your application works, so it finds the logic flaws that pattern scanners miss.

Campaigns

Every Fix Goes to the Right Owner and Stays on Track Until Merged

A campaign owns the work until it is done, at scale. It reads ownership from Compass to find who, capacity from Jira to know when, and escalates in Slack when work stalls. It assigns, follows up and closes on merge with no human chasing.

WhoCompass — the codeowner of every affected path
WhenJira — sprint capacity, so work lands when teams can take it
WhySlack — escalation the moment an SLA is at risk
1,240+
fixes driven to merge last quarter
92%
closed with no human chasing
Campaign · Critical SQLi Sweep
312 findings · 47 services
CRIT payments-api · SQL Injection · /v2/charge
Who · Compass@priya-k owns
When · Jira3 pts free
Why · SlackSLA 6h
PK Assigned to Priya K · PR #1284 raised, merge-ready
Driven to merge289 of 312
92% complete+18 merged today
Business Logic Flaws

Discover Vulnerabilities That Traditional Scanners Miss

Pattern scanners match signatures and cannot reason about intent. Nullify understands how your application works, so it catches the vulnerabilities that only come from logic: broken access control, privilege escalation, insecure workflows, IDOR and race conditions.

✓Reasons across endpoints, roles and data ownership
✓No rule to write, no signature to match
✓In-scope pentest findings backed by reproducible exploit evidence
#1
Broken access control is the most common critical risk in modern apps, and traditional scanners cannot see it.
Business Logic · checkout-service
Critical
Broken Access Control · IDOR
A user can read another tenant's orders
01Authenticated as user A
02GET /api/orders/8841 — owned by user B
03200 OK — returns B's data. No ownership check on the handler.
SAST / DAST
No finding
Nullify
Critical IDOR
</found by reasoning about ownership, not a signature>
Triage

False Positives Filtered Out Before They Reach You

Nullify checks every finding against your risk model in Vault and removes the noise, so the queue your team sees is small, real and ranked.

3,800+
hours/yr saved triaging false positives

80% of low-severity noise auto-suppressed before a human looks.

Triage queue
45,455 in
✓High4,545 kept · ranked
✓Medium4,545 kept · ranked
–Low · noise36,364 auto-suppressed
</only the real queue reaches a human>
Validated Exploits

Every exploit documented with reproducible proof

Nullify works out whether a finding can be exploited using runtime reachability, network exposure and cloud context, then proves it by stepping through the attack live, reasoning between each call. Every triage decision is backed by code.

100+
findings validated for exploitability

Proof you can reproduce every time.

Assessment Steps
Live
Testing the username param for injection…
GET /user?username=admin' AND '1'='1
200 OK { id:1, email:"admin@…" } · '1'='2 → empty ✓
Differential confirms injection. Escalating to a UNION to read the table.
GET /user?username=' UNION SELECT id,email FROM users--
200 OK [ id:1…, id:2…, id:3… ] · 12,841 rows extracted
✓Exploit confirmed · reproducible proof attached
Self-Healing Fixes

Fixes That Update Themselves Until They Are Ready to Merge

When a fix PR fails a check, Nullify looks into the failure, reads the build logs and pushes follow-up commits until every check passes and the pull request is ready to merge. No developer has to babysit it.

89%
merge-ready rate across our customers

Developers refactor a Nullify fix only ~1 in 10 times.

Pull request #47 Open
nullify added 2 commits
fix(deps): upgrade js… Verified ✗ b4dc545
fix: add error handli… Verified ✓ 821e8aa
nullify replied to Priya

First upgrade broke a sync caller — jwt.verify now throws. Added error handling; pipeline green.

Resolved ✓
Reviewer Routing

Every Fix Reaches the Right Reviewer

Every fix arrives as a clean pull request with the change explained inline. It is assigned using code ownership and current review capacity, so it reaches the engineer who can merge it fastest.

✓Assigned by ownership, balanced by review load
✓The reasoning travels with the suggested change
✓Accept in one click, or reply and Nullify revises
middleware/verify.js Conversation · 1
nullify bot suggested a change

The token verification can throw on a malformed JWT and crash the request. Wrapping it returns a clean 401 instead.

Suggested change
- const p = jwt.verify(token, key)
+ let p; try { p = jwt.verify(token, key) }
+ catch (e) { return res.status(401).end() }
Commit suggestion
PK Assigned @priya-k · owns this path
✓Resolve conversation
Escalations

Only the Decisions That Need a Human Reach You

Most work closes on its own. When a fix needs a judgment call, such as accepting a risk, a breaking change or an SLA about to slip, Nullify escalates to the right person in Slack with full context and a one-click decision, then tracks it until it is resolved.

✓Escalates only what really needs a human
✓Full context attached: finding, blast radius and proposed fix
✓One click to approve, adjust scope, or accept the risk
Thread# security-escalations Needs decision
Nullify app 9:14 AM

Merge-ready fix for SQLi in reports/export.go — but it changes a shared query helper used by 3 services. Needs owner sign-off before merge.

Critical · 9.1 Reaches customer data Blast radius · 3 services
ML Routed to @marcus-l · owns billing-svc
SLA · 4h left
One Harness

One Harness Replaces Your Whole Security Toolchain

Nullify takes every security task from first alert to merged fix. It does the work of your scanners, your dashboards and the people needed to run them.

The stack you operate today
SASTSCADASTSecret ScanningContainer ScanningIaC ScanningBug BountyASPMManual Triage
NullifyAn always-on harness of AI agents that finds, checks, fixes and follows up on every issue in one place.One System
Find to Fix · the last mile

Every finding goes to its owner and is improved until it is ready to merge. Your team keeps final merge approval.

Origin
Triage
Validate
Assign
Refactor
✓Merge-ready
Proof in Production

Start seeing results from Day 1

Healthtech · Pharmacy Benefits SmithRx
324

patches merged in a single month.
Fixed critical flaws that could have exposed patient health data.

Media · Live Sports DAZN
Validated

Patches that pass the build and are ready for customer review across its live-streaming platform.

Latent Health
Michael Hensley
Head of Security
Latent Health

“The future is now — we're here.”

“It makes sense to automate this stuff with agents rather than hiring people.”

The Post-Human Product Security Harness

Maximise your token budget

AI only pays off when it works on the right things. The harness runs a mix of models and automatically routes work to cheaper ones when that is all a task needs, so your budget goes to the findings that matter most.

✓A mix of models, with automatic routing to cheaper ones
✓The most exploitable, widest-impact work goes first
✓Every token is tracked and every decision can be audited
✓Engineers spend time on judgment calls, not triage queues
Priced on work done, not seats

You pay for the work Nullify does. We scope your program, estimate the volume and price on outcomes, not headcount or license tiers.

Book a live demo
Capacity ledger · trailing 30dLive
3.9×
higher remediation yield
78%
of capacity sent to proven risk
Where capacity is deployed
Exploitable · critical58%
Reachable · medium35%
Noise · auto-suppressed7%
Model mix · cheaper models take the routine work automatically.

What Is Inside the Harness

A harness is everything around the AI model that makes it safe to run on its own. Post-human means the work closes with no person in the critical path, while your team keeps final merge approval.

01 · Routing
Sends each job to the right agent
Simple questions go to a cheaper model with the right evidence, and hard ones get deeper reasoning.
02 · Context
Knows what matters to your business
Vault ties every decision to your assets, data sensitivity and threat model.
03 · Guardrails
Built not to hide real issues
A finding is only dismissed when there is clear evidence it is safe, and anything uncertain goes to full triage.
04 · Proof
Checks its own work
Fixes are tested against your build and improved until the pull request is ready to merge.
The Results

Close the Patch Gap and Win Back Engineer Time

89%
merge-ready rate
91
FTE-years saved
10,781
vulns fixed
Learn

Learn about the future of product-security