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A Practical Guide to SQL Injection

Web applications use Structured Query Language (SQL) to read and change data. SQL injection occurs when an application lets untrusted input alter the structure of a SQL command. An attacker may then bypass authentication, read private records, or change stored data.

This guide shows how the vulnerability works, introduces its common forms, and explains how parameterized queries keep user input separate from executable SQL.

A Practical Guide to Anomaly Detection

Suppose your credit card statement shows a purchase from a city you have never visited. Anomaly detection is the process that flags this kind of event because it falls outside the usual pattern.

This guide explains how anomaly detection works, compares common statistical and machine learning methods, and links to an interactive example you can run in your browser.