Defensive Security
Defensive security is a cybersecurity approach focused on protecting systems, networks, and data from attacks, breaches, and unauthorized access. It involves implementing proactive measures such as firewalls, intrusion detection systems, encryption, and security policies to prevent, detect, and respond to threats. This contrasts with offensive security, which involves testing systems by simulating attacks to identify vulnerabilities.
Developers should learn defensive security to build secure applications and protect sensitive data from cyber threats, which is critical in industries like finance, healthcare, and e-commerce. It helps in complying with regulations (e.g., GDPR, HIPAA) and reducing risks of data breaches, financial loss, and reputational damage. Use cases include securing web applications, implementing authentication/authorization, and hardening infrastructure in cloud or on-premises environments.