Offensive security · Penetration testing
TechRS is an offensive security firm. We run manual, research-driven penetration tests on web apps, APIs, mobile and cloud — and deliver findings your engineers can act on immediately.
Methodology aligned with
Services
Four focused practices, one standard: every engagement is led by hands-on researchers and ends with findings you can fix.
Manual, attacker-driven testing of your web applications and APIs — from authentication and access control to the business-logic flaws automated scanners can't see.
In-depth security testing of iOS and Android apps — and the APIs behind them — aligned with OWASP MASVS and MASTG.
External and internal network testing, Active Directory attack paths and cloud security reviews across AWS, Azure and Google Cloud.
Manual review of the code that matters most, threat modeling for new features, and hands-on guidance that helps your team ship secure software.
Why TechRS
Every finding is discovered or verified by hand and comes with a working proof of concept. No false-positive padding.
We hunt vulnerabilities on HackerOne, so we approach your product the way real attackers do — chaining small issues into real impact.
Clear reproduction steps, CVSS 4.0 ratings and fix guidance written for developers — plus an executive summary for leadership.
Written rules of engagement, agreed testing windows and an NDA before scoping. Your data stays strictly need-to-know.
How we work
A short call to understand your architecture, risks and goals. You receive a fixed-price proposal and written rules of engagement.
We map your attack surface — endpoints, roles, integrations and trust boundaries — and decide where an attacker would strike first.
Hands-on testing beyond checklists: chaining weaknesses, abusing business logic and proving real impact — safely.
A prioritized report with executive summary, technical findings, proof of concept and remediation guidance — walked through with your team.
After you fix, we verify every remediation and issue an updated report and a letter of attestation for customers and auditors.
Deliverables
Every finding is written to be reproduced, understood and fixed — with the evidence, the impact and the remediation in one place.
Sample finding format (illustrative)
Any authenticated user can read and modify invoices that belong to other organizations by changing the numeric invoice_id — exposing customer names, addresses and payment details across tenants.
GET /api/v2/invoices/48213 HTTP/2
Host: app.example.com
Authorization: Bearer <tenant-A token>
HTTP/2 200 OK
{"id": 48213, "org": "tenant-B", "total": 12400, ...}Enforce object-level authorization on every request: resolve the invoice through the caller's organization and return 404 for anything outside it. Add per-role regression tests.
Bug bounty
We hunt vulnerabilities in bug bounty programs on HackerOne, alongside thousands of researchers worldwide. That adversarial edge — creative, persistent and impact-driven — is what we bring to every engagement.
Threat intelligence
Our vulnerability intelligence dashboard ingests NVD, CISA KEV and EPSS data every hour — so our testing reflects what attackers are exploiting right now.
Live data from NVD, CISA KEV and FIRST EPSS · last sync 1 hour, 4 minutes ago
FAQ
It depends on scope — the number of applications, user roles, API endpoints and environments. After a short scoping call you receive a fixed-price proposal, so there are no hourly surprises.
Most web application and API tests take one to three weeks from kickoff to report, depending on size. The proposal includes a firm timeline.
Yes, with care. We agree on testing windows, request rates and off-limits actions in writing, avoid destructive techniques unless you explicitly approve them, and can test a staging environment instead.
Yes. We sign a mutual NDA before scoping. Findings and any data we encounter are handled strictly need-to-know and retained only as long as our agreement allows.
A scope (URLs, apps, IP ranges or repositories), test accounts for each user role and a technical point of contact. For mobile, the latest builds; for code review, read-only repository access.
Yes. Reports are written to support SOC 2, ISO 27001, PCI DSS and Israel's Privacy Protection (Data Security) Regulations — including a letter of attestation after retesting.
Tell us what you're building. We'll come back with a clear scope, a timeline and a fixed price.