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Cybersecurity for SaaS and technology companies, tested tenant by tenant

SaaS and technology companies hold many customers' data in one platform, so one access-control flaw can expose all of them. ioSENTRIX tests your app, APIs, identity, cloud and pipeline the way an attacker would, and a retest of your fixes is included.

Talk to a SaaS security tester What auditors and customers expect

Who it's forSaaS, platform and technology companies

What we testMulti-tenant apps, APIs, SSO, cloud, mobile and CI/CD

Mapped toOWASP API Top 10 2023, SOC 2, ISO/IEC 27001, GDPR Art. 32

Independently rated

★★★★★ 4.9 / 5 on G2 (12 reviews) · 5.0 / 5 on Clutch

Reviewed by Omair Manzoor, Founder & CEO, ioSENTRIX · Updated November 2026Key terms: SaaS security, API security, Penetration testing

Trusted by security teams at

01The short answer

What does cybersecurity for SaaS and technology companies involve?

Keeping every customer's data inside its own tenant across every surface an attacker can reach: the web app, public and partner APIs, SSO and identity, cloud infrastructure, mobile apps and the CI/CD pipeline that ships them. For most SaaS companies it also means evidence for SOC 2, ISO/IEC 27001 and the security questionnaires enterprise customers send.

The targetTenant data and admin functions

Attackers want one tenant's access to reach another tenant's data, or an admin export.

The methodChained, manual testing

Testers sign in as several tenants and roles and chain weaknesses scanners miss, including business logic.

The proofProof of concept and a fix

Every finding comes with a proof-of-concept exploit and a prioritized recommendation.

What is SaaS security?

SaaS security protects a software-as-a-service platform and its customers' data: tenant isolation, authentication and authorization, API security, cloud configuration and a secure development pipeline. Read the cybersecurity audits SaaS companies prepare for.

What is SaaS penetration testing?

SaaS penetration testing is an authorized, simulated attack on a SaaS product, carried out as several tenants and roles at once, so it shows whether one customer can reach another's data. Read is penetration testing required for SOC 2?

02See it in action

One attack path across a multi-tenant SaaS platform, proven then fixed

Scanners test each endpoint on its own. Attackers chain them. This is how one path from a free-trial account to another customer's data export is found, proven and closed.

Illustrative

Free trial

Trial tenant, real API tokenSigning up issues a token for the production API.Fixed: token scoped to its tenant

Tenant API

Tenant ID taken from the requestGET /api/v1/orgs/{id}/projectsFixed: tenant from the session

Other tenant

Another customer's projectsChanging the org ID returns another tenant's data (API1:2023).Fixed: object-level check

Admin export

Export open to any roleA member-role token can start a full data export (API5:2023).Fixed: function-level check

✓

Retest

Same path, replayedEach step refused at the first check.Path closed

Chained finding: free trial to another tenant's exportCritical

OWASP API Security Top 10 (2023) API1, API5 · Tenant isolation

Scoping tenants

ReconTrial tenant created; production API token issued
ProveTest tenant A reads test tenant B's projects
ImpactMember-role token starts a full export of tenant B
FixFour fixes, one per step, prioritized for your engineers
RetestPath replayed end to end and refused

03What your customers' reviewers see

Cross-tenant data exposure, proven on test tenants
Admin-function risk, proven on test tenants
Fix owner and priority for each step
Retest evidence that the path is closed

Path statusPath not yet tested

Tenants, not just endpoints

We test with several tenants and roles at once, so a flaw that only shows between customers is found.

Impact in business terms

Findings are proven on agreed test tenants and described as which customer data an attacker could reach, not as a scanner score.

Closed, then proven closed

Each step gets its own fix, and the whole path is replayed in the retest to show it no longer works.

Illustrative example. The tenants, endpoints, path and statuses are a composite for explanation only and do not describe any client. Testing uses tenants and accounts agreed in the rules of engagement.

Text version of the exhibit

Recon: testers sign up for a free trial and receive a valid token for the production API.
Pivot: the tenant API takes the organization ID from the request instead of the session.
Other tenant: changing the organization ID returns another test tenant's projects (broken object level authorization, OWASP API Security Top 10 2023, API1).
Admin export: a member-role token can start a full data export (broken function level authorization, API5). The chained finding is rated Critical.
Fixed: four fixes, one per step: scope tokens to their tenant, take the tenant from the session, add an object-level authorization check, and add a function-level check on exports.
Retested: the full path is replayed and refused at the first check. Evidence for customer reviewers: proven cross-tenant and admin-function risk, fix owners and retest results.

03Threat landscape

What are the biggest security threats to SaaS platforms?

Common threats to SaaS and technology companies, where they land, and how ioSENTRIX tests each one.

Threat	Where it lands	How ioSENTRIX tests it	Service
Tenant isolation failure	Multi-tenant data stores, APIs, files and exports	Cross-tenant testing with several test tenants and roles, swapping IDs, tokens and scopes	Web app & API pentest
API abuse	Public, partner and internal APIs	Object, property and function-level authorization, authentication and rate limits against the OWASP API Security Top 10 (2023)	API penetration testing
SSO and OAuth flaws	SAML and OIDC login, OAuth apps and user provisioning	Redirect and token handling, account linking, session and MFA testing. See OAuth security	Application security
Cloud misconfiguration	AWS, Azure and GCP accounts	Cloud configuration review and testing of exposed services, identity and access, and storage	Cloud security
CI/CD and secrets	Repositories, build pipelines and deploy keys	Pipeline and repository review for exposed secrets, over-privileged tokens and unsafe build steps	ASaaS
AI features	LLM assistants, agents and retrieval in your product	Prompt injection, data leakage and tool-abuse testing of AI features	AI penetration testing
Release drift	Features shipped between annual tests	Testing on a platform each release cycle, with retests in the same place	PTaaS
Insecure design	Architecture and the development lifecycle	Architecture review, threat modeling and secure code review	Application security

Coverage is agreed per engagement in the written scope.

04Regulation

Which frameworks and laws call for security testing at SaaS companies?

The frameworks and rules SaaS companies are asked about most often, and what each one says about testing.

SOC 2

AICPA Trust Services Criteria

Applies to

Service organizations whose customers ask for a SOC 2 report

What it says about testing

No criterion names a penetration test, but CC4.1 calls for separate evaluations of your controls, and auditors usually ask for one. SOC 2 penetration testing

ISO/IEC 27001:2022

Annex A 8.8 and 8.29

Applies to

Organizations certifying an information security management system

What it says about testing

No control names a penetration test. Testing evidence usually sits under 8.8 (technical vulnerability management) and 8.29 (security testing in development and acceptance). ISO 27001 penetration testing

GDPR

Article 32(1)(d)

Applies to

Controllers and processors within the GDPR's territorial scope (Article 3)

What it says about testing

Appropriate technical and organisational measures including, as appropriate, a process for regularly testing, assessing and evaluating their effectiveness. EUR-Lex ↗

Customer security reviews

Questionnaires and contracts

Applies to

SaaS vendors selling to enterprises

What it says about testing

Enterprise buyers commonly ask for a recent independent penetration test report and proof that findings were fixed. How buyers assess vendors

Orientation, not legal advice. Which rules apply depends on where you operate, who your customers are and the data you process. ioSENTRIX performs the testing and writes reports your auditor and customers can review; it does not issue SOC 2 reports or ISO certificates.

05Surfaces

Which SaaS surfaces do you test?

Surface by surface, with the standard each one is tested against.

Web application
Access control, tenant isolation, session handling and business logic in the product your customers use.
OWASP Top 10Business logic
Public and partner APIs
Every endpoint tested as every tenant and role, so a caller reaches only the data and functions it is entitled to.
OWASP API Top 10 2023
SSO and identity
SAML and OIDC sign-in, OAuth apps, MFA and user provisioning, including account linking and token handling.
SAML · OIDCOAuth 2.0
Cloud infrastructure
Cloud configuration review and testing of the services, identity and storage behind the product.
AWS · Azure · GCP
Mobile apps
iOS and Android apps and the APIs behind them: secrets in the build, local storage and transport security.
OWASP MASVS
CI/CD and code
Secure code review and pipeline review for secrets, over-privileged tokens and unsafe build steps.
Secure code reviewDevSecOps

06Independently verified

★★★★★

“The team at ioSENTRIX is professional and highly skilled at their craft.”

Awwab A.SVP, Chief Information Security Officer · Verified G2 review ↗

★★★★★

“We were impressed with ioSENTRIX's ability to independently validate the security of our customer-facing product.”

Zeehasham R.Data Scientist, Security Operations · Insurance · Verified Clutch review ↗

4.9 / 5 on G212 reviews · High Performer, Fall 2026↗

5.0 / 5 on ClutchPremier Verified↗

Penetration Testing Solution of the Year2026 CyberSecurity Breakthrough Awards↗

CREST-accredited firmPenetration testing↗

ISO/IEC 27001 certifiedOur own information security management system↗

SOC 2 Type 2 attestedOur own controls, independently examined↗

07How we help

SaaS and technology work we can show you

Described by sector. Clients are never named.

Case study · AI-assisted development

AI-assisted code and CI/CD pipelines assessed across three application environments

PR-level analysis and release-stage SAST across mature, moderately mature and AI-native applications
CI/CD pipeline review of coverage, enforcement and artifact retention
Pipeline remediation recommendations and pre-merge security gates for each environment

Read the case study

Services for SaaS and technologyPenetration testing as a service (PTaaS)Testing on a platform, with retests in the same place, for teams that release often.Application security as a service (ASaaS)Design review, threat modeling and code review across your releases.Continuous threat exposure management (CTEM)Exploitability validated by people, between annual tests.Web application and API penetration testingTenant isolation, access control and business logic, typically 1–2 weeks.Cloud security assessmentAWS, Azure and GCP configuration review.SOC 2 readiness and compliance supportReadiness assessments, documentation and audit preparation (CaaS).

08Insights

Thinking on SaaS security

September 10, 2026

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Most shadow AI was never bought. It was switched on inside software you already approved — invisible to policy lists, procurement, and the proxy. Four reasons it escapes your inventory, and the three questions that find it.

August 4, 2026

Top Penetration Testing Companies for SaaS in 2026

Compare the top penetration testing companies for SaaS in 2026. Explore SaaS security testing, PTaaS providers, services, and key selection factors.

June 26, 2026

What Does a vCISO Do? When Mid-Market SaaS Needs One?

Learn what a vCISO does, when SaaS companies need one, and how vCISO services provide security leadership, risk management, and compliance support.

March 23, 2026

Top Cybersecurity Audits Every SaaS Company Should Prepare For

Discover the top cybersecurity audits every SaaS company must prepare for, including SOC 2, ISO 27001, cloud security audits, and penetration testing requirements.

09FAQ

SaaS security questions

Short answers to what SaaS security and engineering leaders ask us most.

Ask us something else

What is SaaS security?

SaaS security is the set of controls that protect a software-as-a-service platform and its customers' data: tenant isolation, authentication and authorization, API security, cloud configuration and a secure development pipeline. A SaaS penetration test checks whether those controls hold against a real attacker. See what is SaaS security.

What is the biggest security risk in a multi-tenant SaaS application?

Broken tenant isolation: one customer reaching another customer's data or functions, usually through an API that trusts an ID sent in the request. This is broken object level authorization, API1 in the OWASP API Security Top 10 (2023). We test it by signing in as several test tenants and roles and swapping IDs, tokens and scopes.

Do SOC 2 or ISO 27001 require a penetration test?

Neither names one. SOC 2 criterion CC4.1 calls for ongoing and/or separate evaluations of controls, and in ISO/IEC 27001:2022 testing evidence usually sits under Annex A 8.8 (technical vulnerability management) and 8.29 (security testing in development and acceptance). Auditors and enterprise customers usually ask for a recent independent penetration test. See SOC 2 penetration testing.

Does GDPR require penetration testing?

Not by name. Article 32(1)(d) requires, as appropriate to the risk, a process for regularly testing, assessing and evaluating the effectiveness of your technical and organisational security measures. An independent penetration test with a retest is one common way to evidence that process.

How often should a SaaS company run a penetration test?

At least annually and after significant changes is a common baseline, and enterprise customers often ask for a recent report. Teams that ship every week often move to PTaaS, testing new features as they release, with retests in the same place.

How long does a SaaS penetration test take?

A web application penetration test typically takes 1–2 weeks, depending on scope. You receive a written scope and timeline before testing starts.

Can we share the report with our customers?

Yes. The report has an executive summary for customers and auditors, and gives engineers the proof of concept and prioritized fix for each finding. It comes from a CREST-accredited firm that is ISO/IEC 27001 certified and SOC 2 Type 2 attested.

Ready when you are

Find out whether one tenant can reach another's data

Tell us about your product, your tenancy model and the reviews you face. We will help you scope the right test.

Written scope and timeline before testing starts
Retest of fixes included
Reports your auditor and customers can review

Scope your SaaS security test

Takes about a minute.

Cybersecurity for SaaS and technology companies, tested tenant by tenant

What does cybersecurity for SaaS and technology companies involve?

What is SaaS security?

What is SaaS penetration testing?

One attack path across a multi-tenant SaaS platform, proven then fixed

Tenants, not just endpoints

Impact in business terms

Closed, then proven closed

What are the biggest security threats to SaaS platforms?

Which frameworks and laws call for security testing at SaaS companies?

SOC 2

ISO/IEC 27001:2022

GDPR

Customer security reviews

Which SaaS surfaces do you test?

Web application

Public and partner APIs

SSO and identity

Cloud infrastructure

Mobile apps

CI/CD and code

SaaS and technology work we can show you

AI-assisted code and CI/CD pipelines assessed across three application environments

Thinking on SaaS security

SaaS security questions

What is SaaS security?

What is the biggest security risk in a multi-tenant SaaS application?

Do SOC 2 or ISO 27001 require a penetration test?

Does GDPR require penetration testing?

How often should a SaaS company run a penetration test?

How long does a SaaS penetration test take?

Can we share the report with our customers?

Find out whether one tenant can reach another's data