> Web Application Security Audit_
Your web application is open to the whole internet, every hour of the day. Anyone can create an account, change a request in the browser and see what the server does with it.
A web application security audit from Krasty Soft shows you what they would find. We review the source code, test how the app handles accounts, sessions and data, and deliver a ranked list of fixes your developers can act on right away.
> When Does Your Business Need a Web Application Security Audit?_
The best time to audit is before the risk grows, not after a breach. Teams usually come to us at one of these points:
- Before a public launch or a move from beta to paid customers.
- After a large release that changed sign-in, payments, roles or file uploads.
- When an enterprise client or partner asks for a recent security report.
- Before a compliance review, such as SOC 2, ISO 27001, HIPAA or PCI DSS.
- When the app was built by a previous team or generated with AI tools and nobody has checked it.
- After an incident, to find the root cause and anything similar.
If any of these apply, it is time to audit web application security properly rather than rely on a scanner report.
> What Is Included in Our Web App Security Audit_
Each web app security assessment combines manual code review with hands-on testing of the running application. The scope depends on your product, but it usually covers four areas.
Web Application Code Review
We read the server-side and client-side code that handles input, files, money and personal data. We look for injection points, unsafe use of templates, insecure file uploads, server-side request forgery and secrets left in the repository.
Reading the code finds problems that black-box testing misses: a debug route that is never linked, a feature flag that disables a check, or an admin function protected only by a hidden button.
Authentication, Authorization & Access Control Testing
We test sign-up, sign-in, password reset, multi-factor flows and social login. Then we check session management: how tokens are created, where they are stored, when they expire and whether logout really ends the session.
For authorization, we create accounts with different roles and try to cross the lines between them. Can a user open another user's invoice by changing an ID? Can a viewer call an editor's endpoint? Are permissions enforced on the server, or only hidden in the interface? Broken access control is the issue we find most often.
Comprehensive Vulnerability Assessment
We combine manual testing with trusted automated tools to cover the full range of known weaknesses. Every result is verified by hand before it reaches the report.
The assessment includes:
- Input handling and output encoding across forms, search, filters and file names.
- Security headers, cookie flags, CORS and content security policy.
- Encryption in transit and at rest, and how keys and secrets are stored.
- Third-party libraries and dependencies with known vulnerabilities.
- Error messages, logs and analytics that may expose personal data and break user privacy.
API and Database Security Assessment
Most web apps are a frontend on top of an API. We check every endpoint the app uses, including the ones the interface no longer calls, for authentication, rate limits and excessive data in responses.
On the database side, we review query construction, row-level policies, backups, migrations and the permissions of the database user the app connects with. If your API is a product on its own, or serves mobile apps and partners too, we recommend a dedicated API security audit as well.
> Common Web Application Security Risks and Vulnerabilities_
The OWASP Top 10 lists the risks that cause most real-world breaches. A security audit web application teams order from us covers all of them, with extra attention to the following:
- SQL Injection. User input reaches a database query without proper handling. An attacker can read, change or delete data, and sometimes take over the server.
- Cross-Site Scripting (XSS). The app shows user content without escaping it, so a script runs in other users' browsers. It can steal sessions or act on their behalf.
- Cross-Site Request Forgery (CSRF). Another site tricks a logged-in user's browser into sending a request, such as changing an email address or making a payment.
- Broken Access Control. The server does not check whether the user may access a record or action. This includes insecure direct object references and missing role checks.
- Security Misconfiguration. Default settings, open storage buckets, verbose errors and exposed admin panels.
- Vulnerable and Outdated Components. Libraries and frameworks with known, published flaws.
- Server-Side Request Forgery (SSRF). The server can be made to call internal addresses, often leading to cloud credentials.
Business logic flaws deserve a separate mention. Applying a discount twice, skipping a payment step or approving your own request will not show up in any scanner. Finding them takes a reviewer who understands what the app is supposed to do.
> Our Web Application Security Audit Process_
We follow a clear sequence, so you always know what is happening and what comes next.
- Scoping
We agree on the app's components, user roles, environments and goals, and fix the price and dates.
- Preparation
You provide read-only code access and a staging environment with test accounts for each role.
- Code review
Engineers study the source to map entry points, data flows and trust boundaries.
- Testing
We test the running app against that map, focusing on authentication, access control and data handling.
- Reporting
Each confirmed finding gets a severity rating, a clear description of impact, steps to reproduce and a fix.
- Debrief and retest
We review the report with your team and can confirm the fixes after deployment.
> Benefits of a Professional Security Audit for Web Applications_
Automated scanners are useful, but they only find what they were built to look for. A professional audit adds judgment and context, and that brings practical benefits:
- Real risks, not noise
Findings are verified and ranked, so your team spends time on what matters.
- Fewer breaches and incidents
Critical gaps are closed before attackers find them.
- Stronger data protection
Customer and business data stays private, which supports GDPR and similar laws.
- Faster deals
A recent audit report helps you pass vendor security reviews.
- Better engineering habits
Your developers learn the patterns behind each issue and avoid them in new code.
> Industries & Use Cases_
We audit web platforms in SaaS, healthcare, fintech and ecommerce. Typical projects include customer portals, admin dashboards, booking and marketplace platforms, internal tools and B2B products with many user roles.
The risks differ by industry. A healthcare portal must keep each patient's records separate and log every access. A fintech dashboard must protect balances, transfers and payout details. An ecommerce store must stop account takeover, coupon abuse and leaks of order data. We adapt the test plan to these scenarios.
A web audit can stand alone or be part of a wider application security audit that also covers your mobile apps and integrations.
> FAQ About Web Application Security Audit_
Here are answers to the questions clients ask most before a web application audit.
Does a Web Application Security Audit Cover Third-Party Libraries and Dependencies?
Yes. We check your dependencies for known vulnerabilities and review how third-party scripts, SDKs and services are loaded and configured. We also flag outdated packages that are likely to cause problems soon.
Can You Perform a Security Audit Before a Web Application Goes Live?
Yes, and it is the best time to do it. A pre-launch audit costs less, and fixes are easier before real users and data arrive. We can work with a staging environment and a frozen release candidate.
Will a Security Audit Affect My Website's Performance or Availability?
Code review has no effect on your live site. Hands-on testing is done on staging by default. If production testing is needed, we agree on the time window, the request rate and the accounts in advance.
How Are Security Vulnerabilities Prioritized?
We rate each vulnerability by impact and by how easy it is to exploit, using a scale based on CVSS. Issues that expose data, money or admin access come first. The report states clearly what to fix before release and what can be scheduled.