Benford’s Law - Statistical Fraud Detection

Benford’s law - Wikipedia

Fascinating mathematical principle used in fraud detection and data analysis:

The Principle:

In many real-world datasets, the digit 1 appears as the first digit about 30.1% of the time, while 9 appears only 4.6% of the time. This follows a specific logarithmic distribution.

Applications:

  • Fraud Detection: Accounting fraud often violates Benford’s Law
  • Election Auditing: Detecting manipulated voting data
  • Scientific Data: Validating experimental results
  • Financial Analysis: Spotting suspicious financial reporting

Why It Works:

Natural datasets often span multiple orders of magnitude, creating this counter-intuitive but mathematically predictable pattern.

Web Security Headers Demystified

CSRF, CORS, and HTTP Security headers Demystified

Comprehensive guide to understanding web security vulnerabilities and protections:

Key Topics:

  • CSRF (Cross-Site Request Forgery): How attackers exploit user trust
  • CORS (Cross-Origin Resource Sharing): Managing cross-domain requests safely
  • Security Headers: Content Security Policy, X-Frame-Options, etc.
  • Attack Vectors: Real-world examples and mitigation strategies

Event Sourcing Pattern

Event Sourcing pattern - Cloud Design Patterns | Microsoft Docs

Microsoft’s comprehensive guide to Event Sourcing architecture:

Core Concepts:

  • Immutable Events: Store state changes as sequence of events
  • Event Store: Append-only storage for all domain events
  • Projection: Building current state from event history
  • Temporal Queries: Query system state at any point in time

Benefits:

  • Complete audit trail
  • Ability to replay events
  • Support for complex business scenarios
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Mozilla Web Security Guidelines

Web Security

Mozilla’s authoritative guide to web application security:

Coverage:

  • Authentication & Authorization: Best practices for user management
  • Transport Security: HTTPS, HSTS, certificate management
  • Content Security: CSP, XSS prevention, input validation
  • Security Headers: Comprehensive header configuration
  • API Security: RESTful API security considerations

Essential reference for any web developer serious about security.