JWT Security Testing for Your Business
JWT security testing checks whether someone could forge, steal or replay the tokens that keep your users signed in. Omeiro audits JWT implementation, refresh token storage and session termination, and looks for CSRF weaknesses along the way.
What JWT security testing looks at
The main areas we check, by hand with tools as support. The exact scope depends on your package and is agreed in writing before work starts.
Policies
- What exists today
- Gaps and old documents
- Plain-language drafts
Risks
- Main risks listed
- Likelihood and impact
- Owners
Vendors
- Who has your data
- Contracts and access
- Review dates
Action list
- Ranked next steps
- Quick wins
- Longer projects
Checklist Based on common risks and good practice. The exact scope depends on your package and is agreed in writing before work starts.
What you get with JWT security testing
Auditing JWT implementation, refresh token storage, and session termination routines. Eliminating token forgery, replay attacks, and cross-site request forgery (CSRF) vulnerabilities.
Basic Package
Session & token review of 1 app; report. 3-day delivery, 2 revisions.
Standard Package
Up to 3 apps; fixes guided. 5-day delivery, 2 revisions.
Premium Package
Up to 6 apps; retest after fixes. 7-day delivery, 2 revisions.
Clear brief first
We confirm what you need before work starts, so the scope is clear on both sides.
Revisions listed
Each package shows its revision rounds. A round is one list of changes sent together.
Yours once paid
Copyright of the final work passes to you once the order is paid in full.
Work starts only after the scope is agreed in writing and you confirm you own or control the systems involved.
How our JWT security testing works
Map the flow
We trace login, refresh and logout.
Attack the tokens
Signing, expiry and storage are tested for forgery and replay.
Check sessions
Logout and revocation behaviour is verified.
Report
Fixes are listed in order of risk.
JWT security testing: signing, expiry and revocation
JWT security testing looks at how tokens are created, signed, validated and revoked. We check algorithm handling, key management, expiry settings, audience and issuer validation and what happens at logout or password change. Send token samples from a test account, a description of your authentication flow and the libraries in use. Library versions matter, because several well-known attacks came from libraries that accepted unexpected algorithms or unsigned tokens.
Sessions fail in ordinary ways: tokens that stay valid for days, refresh tokens that never rotate, logout that only clears the browser, or admin claims the client can alter. Our JWT security testing reports each issue with a proof and a fix, such as short lifetimes, refresh rotation and server-side checks. Teams often extend the review to the wider web application with a full penetration test.
In short
- Delivery in 3 to 7 days, by package.
- Fixed price, shown before you order.
- SaaS apps using JWT for login and API access.
- Developers wanting a session management security audit before launch.
- Copyright yours after full payment.
JWT Security Testing: common questions
How much does JWT security testing cost?
Prices are fixed and shown by package on our JWT Security Testing pricing page, so you see the full price before you order. You can also ask for a custom quote.
How long does session management security audit take?
Delivery depends on the package: Basic 3-day delivery; Standard 5-day delivery; Premium 7-day delivery.
What is included in the Basic Package?
The Basic Package includes: Session & token review of 1 app; report. Higher packages add more scope, revisions and support.
Can I get a custom token security assessment package?
Yes. If none of the packages fits, use the custom package form on our pricing page to describe what you need, and our team sends you a fixed price.
Are JWTs unsafe?
No, but they are easy to misuse, for example with weak signing or long expiry.
Where should tokens be stored?
It depends on the app, and we advise based on your design.
Do you test CSRF too?
Yes, it is part of the scope.
What access do you need?
A test account and the app URL.
What is the alg none attack on JWT?
It abuses libraries that accept a token declaring no signature algorithm, letting an attacker forge claims. The fix is to enforce an expected algorithm on the server and reject anything else.
Who owns the final work?
Copyright of the final work passes to you once the order is paid in full. Paid fonts, stock files or licences, if used, are licensed in your name.
Ready to start your JWT security testing?
Compare the packages and pick the one that fits. Not sure which? Write to us and we will help you choose.