Cyber Security

Cyber security encompasses the practices, technologies, and processes designed to protect networks, devices, programs, and data from digital attacks, damage, or unauthorized access. Key domains include network security, application security, information security, operational security, disaster recovery, and end-user education.

Core Concepts & Techniques

• Data Concealment: Unlike cryptography which obscures meaning, Steganography hides the existence of the data itself within other media (images, audio, video).
  • See also: Steganography: Concealment, Detection, and Hacker Exploitation for a breakdown of how hackers use file structures to embed secret data.
• Attack Vectors: Includes Malware, Phishing, Denial-of-Service (DoS), and Man-in-the-Middle attacks.
• Defense Mechanisms: Involves Firewalls, Intrusion Detection Systems (IDS), encryption standards (AES, RSA), and multi-factor authentication.

Threat Landscape

Threat actors utilize social engineering and technical exploits to bypass security controls. Recent trends show an increase in supply chain attacks and the use of AI-driven phishing campaigns. Steganography is increasingly used by advanced persistent threats (APTs) to exfiltrate data without triggering anomaly detection systems that rely on traffic volume or pattern analysis.

References & Resources

• OWASP Top Ten
• NIST Cybersecurity Framework
• Steganography case studies and detection methodologies.