Top Mobile App Penetration Testing Companies In 2026

The top mobile app penetration testing companies for most buyers in 2026 are White Knight Labs, for manual iOS and Android testing that covers the app, its back-end services and the APIs between them; NowSecure, for mobile-only specialists with standards-based verification such as MASA for Google Play; and Bishop Fox, for deep binary analysis and runtime instrumentation with or without source code. This list covers seven more firms, from PTaaS platforms to boutique specialists, with what each one says it tests and delivers.

This list is for mobile engineering, product security and compliance leads who need an outside firm to attack their iOS and Android apps before attackers or app store reviewers do. We only included service firms with a named mobile application penetration testing offering. Mobile security products, SDKs and app shielding tools are not on this list. For those, see our older mobile application security companies roundup. We compared each firm on platform coverage, standards, static and dynamic testing, rooted and jailbroken device testing, back-end coverage, reporting and retests, using the companies’ own service pages.

Mobile App Penetration Testing Companies At A Glance

Company	Headquarters	Best For	Mobile Testing Coverage
White Knight Labs	Guys Mills, Pennsylvania, USA	Manual testing of apps and back ends	iOS, Android, static, dynamic, rooted and jailbroken devices, APIs
NowSecure	Chicago, Illinois, USA	Mobile-only expertise and certifications	MASVS verification, MASA, ioXt, NIAP, rapid and full scope tests
Bishop Fox	Tempe, Arizona, USA	Deep binary and runtime analysis	MASVS and MSTG, reverse engineering, instrumentation, server side
Blaze Information Security	Not published	Platform-specific iOS and Android checks	MASVS, MASTG, IPA and APK analysis, deep links, IPC
Cobalt	Boston, Massachusetts, USA	Real-device testing through PTaaS	Jailbroken iOS and rooted Android devices, MASVS-informed
Rhino Security Labs	Seattle, Washington, USA	Threat scenarios such as stolen devices	Static, runtime, malware scenarios, optional source review
Triaxiom Security	Charlotte, North Carolina, USA	A predictable process and free retest	OWASP MSTG, binary analysis, authorization bypass, injection
Packetlabs	Toronto, Ontario, Canada	Cross-platform builds and fast release cycles	Native, hybrid, cross-platform, runtime tampering, API validation
SecureLayer7	Austin, Texas, USA	Hybrid frameworks and UK banking apps	React Native, Flutter, Cordova, MASVS L2, Frida-based runtime work
Websec	Not published	Manual-first testing mapped to MASVS	Four-phase method, pinning and root detection bypass, back end

Best Mobile App Penetration Testing Companies In 2026

1. White Knight Labs — Manual iOS And Android Testing From Device To Back End

White Knight Labs is an offensive security firm founded in 2017, with offices in Guys Mills, Pennsylvania, and Grand Rapids, Michigan. Its mobile application penetration testing covers both iOS and Android and does not stop at the app: scope includes on-device security, the back-end web services and the APIs that connect them, with checks that data is transmitted securely and that APIs enforce authentication and authorization.

The methodology runs in eight phases. After scoping and reconnaissance of the app’s architecture, APIs and third-party integrations, testers run static analysis, reviewing source code when provided for hardcoded secrets, weak cryptography and poor input validation, or decompiling and reverse engineering the app when it is not. Dynamic testing then runs the app under normal and abnormal conditions to find insecure data storage and weak session management. Device-specific testing uses both standard devices and rooted Android or jailbroken iOS devices, and controlled exploitation shows real impact, such as data access, privilege escalation or control bypass. Scenarios include insecure storage, stolen devices, mobile malware and plaintext secrets, for both authenticated and unauthenticated users.

Reports include an executive summary, risk-rated technical findings, remediation guidance, a findings CSV for issue trackers, vulnerable code sections when source review is included, and attack path mapping that shows how flaws chain together. Retesting verifies fixes. The firm runs roughly 20% automated and 80% manual testing, holds CREST Pathway+ status and is a Service-Disabled Veteran-Owned Small Business.

Best for: Teams that want mostly manual testing of their apps and the back-end services behind them, with findings their developers can import straight into tracking tools.

2. NowSecure — Mobile-Only Specialists With Standards-Based Verification

Chicago-based NowSecure works only on mobile, and its penetration testing as a service shows it. The company cites more than 12 years in mobile, over 11,000 mobile app pen tests and more than 400 standards-based verifications or certifications. Buyers can choose rapid, targeted or full scope pen tests, or an OWASP MASVS verification, and pair them with continuous automated testing tiers. NowSecure lists two-day rapid tests and two-week full scope tests.

Standards work is its niche. NowSecure performs ADA MASA validation for the Google Play Data safety section, ioXt compliance testing and NIAP compliance vetting, which matters for apps sold to government or listed with security badges. Testing runs through the NowSecure Platform portal, and coverage goes beyond phones to tvOS, Android TV, Roku, Tizen, webOS, PlayStation and Xbox apps.

Best for: App publishers that need certifications such as MASA or NIAP, or that ship apps across many device platforms.

3. Bishop Fox — Binary Analysis And Runtime Instrumentation With Or Without Source

Bishop Fox, based in Tempe, Arizona, runs mobile application assessments that combine in-depth manual and dynamic analysis of Android and iOS apps. Testing follows the OWASP Mobile Security Testing Guide and the MASVS and covers the OWASP Mobile Top 10 risks, such as improper platform usage, insecure data storage and insecure communication.

The depth comes from static and runtime work. Testers use binary and file-level analysis to find hard-to-spot issues, then apply runtime patches, intercept network traffic, inspect filesystem and keystore storage and dynamically instrument the binary to find business logic flaws. Assessments can be zero, partial or full knowledge. With source code, a hybrid option uses it to locate and validate issues, and without it, testers reverse engineer the binary. The team also inspects the app’s API and includes server-side testing in scope.

Best for: Enterprises and high-risk consumer apps that want the deepest possible review of the binary and its runtime behavior.

4. Blaze Information Security — Separate Platform-Specific Checks For Every Build

Blaze Information Security tests each iOS and Android build with platform-specific techniques, even when both apps share a back end. On iOS, that means IPA analysis, Keychain, URL schemes, WebViews, runtime controls and jailbreak defenses. On Android, it covers APK analysis, exported components, deep links, WebViews, Keystore, IPC and root defenses.

The methodology names OWASP MASVS, MASTG and the Mobile Top 10, alongside PTES and NIST SP 800-115, and combines static and dynamic analysis, reverse engineering, traffic inspection and manual abuse-case testing. Every finding is validated by hand. Reports can map findings to MASVS, SOC 2, ISO 27001 and PCI DSS, retesting is available when included, and Blaze cites an average start time of about two weeks.

Best for: Teams with separate native iOS and Android codebases that want each platform tested on its own terms.

5. Cobalt — Human-Led Tests On Real Rooted And Jailbroken Devices

Boston-based Cobalt runs human-led mobile pentests for iOS and Android through its PTaaS platform, with a methodology informed by OWASP MASVS. Testing happens on real jailbroken iOS and rooted Android devices rather than emulators, because some client-side issues only show up on real hardware.

Findings are reported in real time in the Cobalt platform, and each one is open to unlimited retesting within a seven-day SLA, which suits teams on short release cycles.

Best for: Product teams that want platform-based mobile testing on real devices and quick fix verification. Compare models in our PTaaS vs traditional penetration testing guide.

6. Rhino Security Labs — Scenario-Based Testing For Stolen Devices And Malware

Seattle-based Rhino Security Labs supports both iOS and Android and tailors tests to each, such as reverse engineering an iOS app or assessing malware threats against an Android app. Assessments cover insecure storage, stolen devices, mobile malware and both authenticated and unauthenticated users, and Rhino can build custom scenarios for apps used on company-managed devices.

Testing runs at rest and at runtime, covering local issues such as insecure credential storage and Android backups that expose app data, on both standard and jailbroken or rooted devices. Back-end web services and their APIs are in scope, and an optional full source code review can find what decompiling misses. Reports include risk-prioritized findings, attack walkthroughs with screenshots, vulnerable code sections when source is reviewed and remediation guidance.

Best for: Organizations with field or employee apps that need realistic lost-device and malware scenarios tested.

7. Triaxiom Security — MSTG-Based Testing With A Free 90-Day Retest

Charlotte-based Triaxiom Security tests iOS and Android apps against the OWASP Mobile Security Testing Guide and checklist, covering both unauthenticated and authenticated parts of the app. Techniques include static and dynamic binary analysis, review of encryption and secure communication, logic and authorization bypass checks, and automated and manual injection testing.

The process is well documented: a scoping call, a proposal within hours, a rules of engagement review at kickoff, two QA rounds on each report, delivery through a secure portal and a findings presentation. Most projects take one to two weeks of active testing, and clients get one free retest within 90 days.

Best for: Mid-sized companies that want a predictable mobile engagement with clear retest terms.

8. Packetlabs — Native, Hybrid And Cross-Platform Apps Tested With Their APIs

Toronto-based Packetlabs tests iOS and Android apps, including native, hybrid and cross-platform builds, and tailors the approach to each client’s release model and user base. Testing covers static and dynamic analysis, traffic interception, runtime manipulation and reverse engineering, with a focus on client-side weaknesses through runtime tampering and logic abuse.

Packetlabs pairs mobile testing with API validation, following trust relationships from the app into its services to document end-to-end attack paths. Sign-in flows, token handling, biometric gates and authorization controls are tested across the app and back end, and validation retesting confirms fixes before the next release. Findings reference the OWASP Mobile Top 10.

Best for: Teams shipping cross-platform apps on frequent releases that want the app and its APIs tested as one attack surface.

9. SecureLayer7 — Hybrid Framework Testing And MASVS L2 Evidence

SecureLayer7, with its site footer listing Austin, Texas, and a London office for UK work, tests iOS and Android under one scope with the shared mobile back end included by default. Coverage spans native and hybrid apps built with React Native, Flutter, Cordova and Ionic, plus WebView surfaces.

Testing is manual and aligned to OWASP MASVS, combining static review of the IPA or APK with runtime instrumentation using tools such as Frida and Objection. For UK banking clients, SecureLayer7 references MASVS L2 and MASTG test cases with evidence prepared for FCA reviewers. The method runs through eight phases ending in patch verification, retesting is included at no extra cost, and pricing is a fixed fee per platform. SecureLayer7 lists CREST accreditation, ISO/IEC 27001 and SOC 2 Type II.

Best for: Fintech and banking apps built on hybrid frameworks that need MASVS-mapped evidence for regulators.

10. Websec — Manual-First Testing Mapped To MASVS Categories

Websec describes its mobile service as manual-first security testing for iOS and Android, combining app instrumentation with hands-on work and pairing static and dynamic analysis with API and back-end testing. Its checks map to MASVS categories covering platform usage, insecure data storage, communication, authentication, cryptography, authorization, code quality, tampering, reverse engineering and extraneous functionality.

The four-phase methodology starts with discovery of the app’s architecture, permissions and data flows, moves through static review of binaries and source when available, then dynamic testing of runtime behavior, traffic and sessions, and ends with platform and back-end testing, including jailbreak and root detection bypass, certificate pinning and back-end APIs.

Best for: Smaller teams that want a focused, manual mobile test with findings mapped clearly to MASVS.

How To Choose A Mobile App Penetration Testing Company

Do They Test Both Platforms Separately?

iOS and Android have different storage, IPC and permission models. Ask whether the vendor tests each build with platform-specific techniques, as Blaze and Rhino describe, or treats them as one app.

Which Standard Will They Map To?

OWASP MASVS and MASTG are the common baseline. If you need a formal outcome, such as MASA for Google Play or NIAP for government buyers, confirm the vendor performs it, as NowSecure does.

Will They Test On Rooted And Jailbroken Devices?

Testing on compromised devices shows what a determined attacker or malware can reach. White Knight Labs, Cobalt, Rhino and Websec all describe it.

Is The Back End In Scope?

Most serious mobile findings sit in the APIs behind the app. Make sure back-end services are tested, or add a separate engagement from our API penetration testing companies list.

Do You Need To Share Source Code?

Source code is not required, but it helps. Bishop Fox, Rhino and White Knight Labs offer source-assisted options that point developers to the vulnerable code.

Frequently Asked Questions

What Is Mobile App Penetration Testing?

Mobile app penetration testing is an authorized attack on an iOS or Android app, its local data and the services it talks to, to find flaws such as insecure storage, weak authentication, broken authorization and exposed secrets. See what is penetration testing for the basics.

What Is OWASP MASVS?

The OWASP Mobile Application Security Verification Standard is a set of security requirements for mobile apps. The companion MASTG explains how to test them. Most firms on this list reference one or both.

How Long Does A Mobile App Penetration Test Take?

Most take one to two weeks of active testing per app. NowSecure offers two-day rapid tests and two-week full scope tests, and Triaxiom cites one to two weeks.

How Much Does Mobile App Penetration Testing Cost?

Price depends on the number of platforms, app size, back-end scope and whether source review is included. Our penetration testing cost guide explains typical drivers.

Conclusion

White Knight Labs suits teams that want mostly manual testing of their apps and back-end services, NowSecure suits publishers that need mobile-specific certifications, and Bishop Fox suits enterprises that want the deepest binary and runtime analysis. Blaze Information Security, Cobalt, Rhino Security Labs, Triaxiom, Packetlabs, SecureLayer7 and Websec each fit specific needs, from real-device PTaaS testing to hybrid frameworks and MASVS-mapped evidence.

Whichever firm you choose, confirm platform coverage, back-end scope and retest terms in writing. For broader options, see our top penetration testing companies list, or browse the full penetration testing hub.