Tauri App Penetration Testing
Tauri narrows the attack surface Electron leaves open, then hands it back through the command allowlist. Every Rust command you expose is callable from the webview, so a cross-site scripting bug becomes native code execution. CREST-certified testers, fixed price from £2,870, scoped in 24 hours.
- Unlimited retesting
- No rescheduling or cancellation fees
- Fixed quote within 24 hours
“I would highly recommend EJN Labs to any organisation seeking reliable, detailed, and well-managed penetration testing services, particularly for government or enterprise-level projects.”
Imran SaghirProject Lead, SquareOne“There wasn’t another company we could find that could deliver what we needed in the timeframe we needed. The client loved it, and we got instant ROI from the engagement.”
Dan WilcocksonCo-Founder, CelloriTauri’s architecture is a genuine improvement on the alternatives. The front end runs in the system webview with no Node runtime, and the privileged work happens in Rust behind an explicit boundary. That boundary is the security model.
Why the IPC boundary is the whole design
It holds only as far as the commands you expose are narrow. A command that takes a path and reads a file, or takes a string and runs a process, is reachable from any JavaScript running in the webview. So a content injection flaw that would be an ordinary cross-site scripting issue in a browser becomes native execution on the user’s machine.
Capabilities and the permission system in recent versions make this controllable, which means it is also worth auditing. We enumerate what is actually granted to each window rather than what the defaults suggest.
ISO 27001, SOC 2, PCI DSS and Cyber Essentials Plus audits accept manual penetration test evidence. Scan-only evidence is generally insufficient.
COMMANDS, IPC + UPDATER
What we actually pen test on a Tauri application
Manual pen testing across the command allowlist and capability scope, the IPC boundary, webview content handling, updater signing and filesystem access.
Command allowlist and capabilities
Every exposed command reviewed for what it permits, argument validation in Rust, capability and permission scope per window, and whether a command chain reaches filesystem, process or network operations.
IPC boundary and invocation
Whether the front end can invoke commands it should not, event and channel handling, whether remote or injected content can reach the IPC bridge, and isolation pattern usage.
Webview content and injection
Content security policy configuration, whether any remote content is loaded into a privileged window, injection paths in rendered content, and external link and navigation handling.
Updater and code signing
Update endpoint and signature verification, whether an unsigned or downgraded update is accepted, transport security on the update channel, and platform code signing.
Filesystem and protocol scope
Filesystem allowlist scope and path traversal within it, custom protocol handlers, asset protocol configuration, and whether the app can be made to read or write outside its intended directories.
Local storage and secrets
What the application stores on disk, whether credentials or tokens are written in plaintext, use of the platform keychain, and what an attacker with local access recovers.
METHODOLOGY
Tauri App Penetration Testing: From Scope to Attestation
CREST-aligned methodology built on OWASP Web Security Testing Guide, OWASP ASVS, NIST SP 800-115, and PTES. Each finding maps to all four standards plus your specific compliance regime.
Reconnaissance
Application mapping, technology fingerprinting, content discovery, parameter enumeration, authentication-flow analysis, role-matrix construction.
Vulnerability Assessment
Authenticated and unauthenticated automated scanning across every user role, plus targeted manual checks for known weakness patterns.
Manual Exploitation
Hands-on testing by a CREST-certified pentester. Business-logic exploitation, chained vulnerabilities, privilege escalation, impact validation.
Reporting + Retest
Executive summary, technical report with CVSS scores and reproduction steps, walkthrough call, free retest after remediation, attestation letter.
CREDENTIALS
Verified Accreditations Auditors Accept
Every credential below is independently verifiable. UK procurement teams, FCA supervisors, ISO 27001 / SOC 2 auditors, and cyber insurance underwriters all recognise these standards.
GET YOUR QUOTE
Get a CREST Tauri pen test quote in 24 hours
A fixed-price quote back in one business day, from a named CREST assessor. No sales pipeline, no chasing.
- CREST and IASME accredited. Testing your auditors and clients already recognise.
- Fast-track testing within 24 hours where required. Free retest of every fix included.
- Live findings via your client portal, not a four-week PDF.
- Fixed price from £3,500 for a single-role, single-app scope, agreed up front. Most engagements run £5,000 and up. No day-rate surprises.
Dan WilcocksonCo-Founder, CelloriUnder NDA Further named references available on a scoping call.
- We reply within one business day with a fixed-price quote from a named CREST assessor.
- You approve the scope and we book a start date, usually within 24 hours.
- Live findings land in your client portal as we test, with a free retest of every fix.
Get your fixed pen test quote in 24 hours
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COMPLIANCE READY
Reports Mapped to Every Framework
Findings are explicitly tagged to the relevant control reference. Your audit team submits the report directly without translation work.
ISO 27001:2022
Annex A.8.8 management of technical vulnerabilities plus A.5.15-5.18 and A.8.2-8.5 access control validation.
SOC 2 Type I & II
CC6 logical access, CC7 system operations, CC8 change management evidence.
PCI DSS
Requirement 11.4 application penetration testing across cardholder data environments, including ecommerce penetration testing for online retail platforms.
FCA SYSC
SYSC 4.1.1R, 6.1.1R, 13 mapped to each finding for FCA-regulated firms.
UK GDPR
Article 32 effectiveness testing, customer-data security controls, ICO-acceptable evidence.
Cyber Essentials Plus
Direct certification through our IASME body status, single-vendor delivery.
PRICING
Transparent Tauri App Penetration Testing Pricing
Pricing depends on app complexity, user-role count, business-logic depth, and integration surface. The day count flexes; the included deliverables stay the same across all engagements.
2 to 3 testing days
Single user role, basic CRUD application, marketing website with auth. Around 5 working days from kickoff to report.
Get a fixed quote3 to 5 testing days
Multi-role SaaS, business application with payment integration. Around 8 to 12 working days from kickoff to report.
Get a fixed quote5 to 7 testing days
Multi-tenant platform, complex authorisation matrix, integration-heavy applications. Around 15 to 20 working days from kickoff to report.
Get a fixed quotePart of Technologies We Pen Test. These are examples of the stacks we publish pages for, not a complete list. If yours is not here we still test it. Related pages:
BY SECTOR
Tauri App Penetration Testing for Your Sector
Sector-specialist scoping for UK businesses with sector-specific compliance regimes and threat models.
Fintech & FCA-Regulated
FCA SYSC, Open Banking FAPI 1.0, PSD2 SCA, payment-flow scrutiny, KYC/AML testing.
Fintech sector pageSaaS Companies
SOC 2 Type I & II evidence, multi-tenant boundaries, role escalation, customer-tenant isolation.
SaaS sector pageLaw Firms
SRA Cyber Standard, privileged data, conveyancing fraud defence, partner-tier procurement.
Law firm sector pageHealthcare
NHS DTAC, DSP Toolkit v6, UK GDPR Article 32, EHR systems, telehealth platforms.
Healthcare sector pageInsurance
FCA / PRA Operational Resilience, cyber underwriting, claims data, broker portals.
Insurance sector pagePublic Sector
CCS / G-Cloud framework, NCSC-aligned, citizen-facing services, PSN-compliance scrutiny.
Public sector pageWHY EJN LABS
What You Get From Tauri App Penetration Testing
Six concrete differentiators competitors don’t all match.
CREST-Certified Testers, Verifiable
Every test by a CREST-certified pen tester (CRT, CCT APP, CCT INF where applicable). Verify our company status at crest-approved.org.
24-Hour Startup, Where Required
From signed scope to active testing in a single business day for incident response, audit deadlines, or regulator-driven timelines.
Live Findings, Not 4-Week PDFs
Critical issues reported during testing through your client portal. Your team remediates while testing continues.
Audit-Ready Reports
Executive summary plus full technical report with CVSS scores and explicit framework mappings (ISO 27001, SOC 2, PCI DSS, FCA SYSC).
Free Retests, Standard
Verify remediation of every finding before close-out. Letter of attestation for audit submission included. Most competitors charge £1,500-£3,000 per retest.
UK-Based CREST Testers
Every engagement performed by vetted, UK-based CREST-certified testers, matched to your needs, security clearance, and compliance scope.
FAQ
Frequently Asked
Why not just use your Electron page?
They share a shape and differ in the detail. Electron risk concentrates on nodeIntegration, context isolation and preload scripts. Tauri risk concentrates on the command allowlist, capabilities and the Rust side. Testing one as if it were the other misses things.
Do you need the source?
It makes a substantial difference here. The command surface is defined in Rust and the capability files are declarative, so reading them turns the test from guesswork into systematic coverage. We work under NDA.
Is the Rust code reviewed?
We pen test it as part of the engagement and pay particular attention to command handlers, since those are the trust boundary. Full line-by-line review is our secure code review service and pairs well with this.
What about Tauri v1 applications?
Still tested. The v1 allowlist model differs from the v2 capability model and tends to be broader, so v1 applications frequently expose more than their authors remember.
What do we receive?
A report mapped to ISO 27001 and SOC 2 where relevant, a developer write-up with reproduction steps, a walkthrough call and unlimited free retesting.
20+ CREST-accredited testing services in one place
Web, mobile, API, cloud, AI, infrastructure, red team. Pick the test that fits your environment.
Get a fixed price for your Tauri application
Send us the build, tell us which platforms you ship and whether the Rust source is available. Fixed-price quote from a named CREST assessor within one business day.
