Section 1. Security requirements for biomedical signals. Chapter 1. PCG-based biometrics ; Chapter 2. Biosignal denoising techniques ; Chapter 3. Secure access to biomedical images ; Chapter 4. Early detection of breast cancer using image processing techniques ; Chapter 5. Filtration and classification of ECG signals ; Chapter 6. Wavelet and curvelet transforms for biomedical image processing ; Chapter 7. Pulse oximetry: an introduction -- Section 2. Security over wireless sensor networks and distributed systems. Chapter 8. Attacks and countermeasures ; Chapter 9. Security risks of biomedical data processing in cloud computing environment ; Chapter 10. Intrusion detection system in wireless sensor networks for wormhole attack using trust-based system ; Chapter 11. Uwdbcsn analysis during node replication attack in WSN ; Chapter 12. Wireless enhanced security based on speech recognition -- Section 3. Security through machine learning techniques and watermarking techniques. Chapter 13. Algorithms for detection and classification of abnormality in mammograms: an overview ; Chapter 14. A novel approach for computer-aided diagnosis for distinction between benign and malignant of lung nodules based on machine learning techniques ; Chapter 15. Automatic detection of tumor and bleed in magnetic resonance brain images ; Chapter 16. Mutual correlation-based anonymization for privacy preserving medical data publishing ; Chapter 17. A hybrid watermarking technique for copyright protection of medical signals in teleradiology ; Chapter 18. Medical signal security enhancement using chaotic map and watermarking technique.