If we report it, we’ve exploited it.
Celcius tests your running application the way a real attacker would. Every vulnerability we report arrives with exact reproduction steps, a working proof-of-concept, and the fix — in days, not weeks.
- surface
- 312 endpoints mapped
- testing
- authz · injection · logic
- finding
- F-014 broken access controlGET /api/v2/invoices/{id}
- impact
- any user reads any invoice
- proof
- reproduced 3/3 · PoC attached
- fix
- ownership check · re-test passed
Offensive testing, delivered as outcomes.
We test the application you actually run, then give your engineers everything they need to close what we find.
Find
- Real-world penetration testing
- We test your running application the way an attacker would — dynamically, against its live behavior, not just the source.
- Attack-surface mapping
- Before we test, we enumerate what you expose — subdomains, endpoints and fingerprints — so nothing hidden is missed.
- Full offensive coverage
- Web and API testing across injection, broken authentication, access-control bypass, XSS, CSRF, clickjacking, SSRF and business-logic flaws.
- Code-aware testing
- We pair outside-in testing with review of how your application behaves, reaching vulnerabilities that blind scanners can’t.
Prove and fix
- Validated findings, not noise
- Every vulnerability we report is confirmed with a working proof-of-concept and exact reproduction steps. No false positives to triage.
- Actionable remediation
- Each finding ships with a concrete, ready-to-apply fix and guidance — not just a severity label.
- Re-test and verify
- Once you’ve fixed an issue, we verify the fix actually closes it.
- Clear reporting
- Readable, prioritized reports that work for your engineers and for your compliance reviews.
Keep pace
- Continuous testing
- Optional ongoing testing that keeps pace with every release, instead of a once-a-year snapshot.
- Pipeline integration
- We plug testing into your delivery pipeline so risky changes are caught before they ship.
How an engagement works.
Six steps, from agreed scope to a verified fix. Most engagements deliver validated findings within days.
- 1
Scope
We agree targets, rules of engagement and timing. You get a fixed plan before testing starts.
- 2
Test
We map your attack surface, then test it dynamically against its live behavior.
- 3
Validate
Every candidate issue is exploited under controlled conditions. If we can’t prove it, we don’t report it.
- 4
Report
Prioritized findings, each with reproduction steps and a working proof-of-concept.
- 5
Fix
Each finding comes with a concrete fix your engineers can apply directly.
- 6
Verify
We re-test your fixes and confirm each issue is closed.
Proof you can hand to an engineer.
Validated, not speculative
Findings are confirmed exploits. Your team spends its time fixing, not triaging false positives.
Days, not weeks
Engagements are scoped tightly and run fast, so results land while the code is still fresh.
Remediation included
Every finding comes with the fix, and we re-test it once it’s applied.
Rigor and discretion
A controlled, documented methodology, careful handling of your data, and reports shared only with the people you name.
- Sign in as user A.
- Request GET /api/v2/invoices/8841, owned by user B.
- The API returns 200 with user B’s invoice.
- SELECT * FROM invoices WHERE id = $1+ SELECT * FROM invoices WHERE id = $1 AND owner_id = $2
Request a pentest.
Tell us who you are and we’ll arrange a short scoping call. We’ll be in touch within one business day.
We use these details only to respond to your request.