For the growing community of Cyprus SaaS and fintech platforms, the most important security boundary is the one between tenants — and it lives entirely in your own code. Our SaaS penetration testing pressure-tests that boundary the way an attacker (or a curious customer) would: we stand up multiple tenants and roles and attempt to read, write and escalate across them, while testing your APIs, SSO and subscription logic.
Using two or more test tenants, we hunt the flaws unique to multi-tenancy: cross-tenant IDOR, RBAC gaps that let one role act as another, and shared-resource leakage. We also probe the commercial logic — plan limits, seat counts and billing — that customers and attackers abuse to escalate access or avoid paying.
For a Cyprus SaaS vendor selling into the EU, a single isolation flaw is an existential event — one tenant reading another's data is a simultaneous GDPR breach of every customer, and enterprise buyers increasingly demand independent proof before they sign. A clean scan says nothing about whether your tenant boundary truly holds.
What we test
Tenant isolation and cross-tenant access
Role-based access control (RBAC) enforcement
Cross-tenant IDOR and data leakage
Authentication, SSO and session security
API and integration security
Subscription, billing and plan-limit logic
Common vulnerabilities we uncover
Cross-tenant data access (broken isolation)
Privilege escalation across roles
IDOR exposing other tenants' records
SSO and token-handling weaknesses
Rate-limit and plan-restriction bypass
Injection and business-logic abuse
How we run your engagement
Kick-off & scoping. A short call to agree goals, in-scope assets and rules of engagement, so your saas penetration testing is safe, authorised and aimed at your real business risk.
Mapping & discovery. Before touching anything we map the full attack surface in scope, so nothing exploitable slips through.
Hands-on testing. Cyprus-based specialists exploit and chain weaknesses manually — the flaws scanners walk straight past — to show genuine impact.
Reporting. Each issue is verified, CVSS-rated and documented with a step-by-step reproduction and a practical fix your team can apply.
Free retest. Once you have remediated, we re-test at no extra cost to confirm the attack path is truly closed.
Tools & techniques
We work with least two provisioned tenants and a matrix of roles, driving Burp Suite Professional and custom tooling to replay each tenant's requests in another's session and context. Every object reference, API endpoint and SSO assertion is tested for cross-tenant leakage and privilege escalation.
We treat the API as a first-class surface, since most SaaS logic lives there, and we chain findings — a leaked identifier plus a missing server-side check — into a demonstrable cross-tenant compromise rather than a theoretical one.
When you need this engagement
You run a multi-tenant SaaS product
An enterprise prospect requires a pentest before buying
You are pursuing SOC 2 or ISO 27001
You have added roles, SSO or a new tenant model
You handle customer data across many organisations
What you receive
Executive and technical report with evidence
Tenant-isolation and RBAC findings prioritised
Per-finding reproduction and remediation
SOC 2 / ISO 27001-relevant guidance
Attestation letter for enterprise buyers
Complimentary retest after fixes
Your deliverables
When your saas penetration testing wraps up, you receive a clear, audit-ready report plus a walkthrough call with your team. Inside you will find:
A concise executive summary that management and the board can act on
Every technical finding with a reproducible, copy-paste proof of concept
CVSS v3.1 ratings and plain-language business impact for each issue
Practical, prioritised remediation your developers can implement straight away
A free retest and updated finding status once fixes are in place
A signed attestation letter for clients, auditors, GDPR, NIS2 and ISO 27001
Standards & frameworks
OWASP Top 10OWASP ASVSSOC 2ISO 27001
What you gain
By the end of your saas penetration testing, you will know exactly which weaknesses a real attacker could exploit, what it would cost your business, and the precise order in which to fix them — backed by evidence, not a scanner’s guesswork. Cyprus firms use our findings to close critical gaps, satisfy client and regulator security questionnaires, and demonstrate due diligence for GDPR and NIS2. With a free retest included, you also get documented proof the issues are resolved.
Working with us
Every saas penetration testing begins with a short, no-obligation scoping call to understand your goals, environment and constraints, followed by a fixed-price proposal. Most work is delivered remotely, and because we are based in Cyprus we work in your timezone with on-site visits across Limassol, Nicosia and island-wide where it helps. We keep you updated throughout and flag any critical finding immediately rather than waiting for the report. Everything is covered by a signed NDA and safe, non-disruptive testing that protects your production systems. You receive your report, a walkthrough and a complimentary retest once fixes land. Engagements are typically booked one to three weeks ahead, and urgent testing can often be arranged — just email hi@cypruspentest.com.
Why Cyprus businesses choose CyprusPentest
Your saas penetration testing is run by senior offensive-security specialists who test the way genuine attackers do — manually, creatively and focused on proving real impact. What sets us apart:
Based in Cyprus — local, in your timezone, with on-site coverage across Limassol and Nicosia.
Manual, exploit-led testing that chains vulnerabilities the way an attacker would, well beyond automated scanners.
Reproducible proof for every finding, with copy-paste steps your team can independently verify.
Compliance-ready reporting that supports GDPR, NIS2, ISO 27001 and CySEC expectations.
A free retest so you have documented evidence your fixes actually hold.
Fixed-price and responsive, with a named point of contact from scoping through to retest.
Explore related services
SaaS Penetration Testing pairs well with our other Cyprus penetration testing services for fuller coverage. You may also want:
Web Application Penetration Testing — Web application penetration testing in Cyprus. Manual, exploit-led testing for Limassol & island-wide businesses — OWASP-aligned,…
API Penetration Testing — API penetration testing in Cyprus for REST & GraphQL. OWASP API Top 10, BOLA/BFLA and token…
Every saas penetration testing in Cyprus is scoped and priced individually, so you pay only for the coverage you need — with no hidden extras. After a short, no-obligation scoping call we send a fixed-price quote, usually within one business day, with clear deliverables, a firm timeline and a complimentary retest included. The price depends on the size and complexity of your environment, so you always know the cost up front before any work begins.
