Three log analysis methods were proposed in this book, to identify, analyze and preserve the potential evidence in a log file. An intrusion detection method based on Bayesian Fuzzy Clustering (BFC) and two levels of Gravitational- Group search based SVNN is proposed to help cloud forensic investigators in identifying potential evidence about an intrusion. A multi-level and mutual log integrity preservation approach using public key infrastructure for cloud forensics is proposed to prevent a criminal or cloud service provider or the forensic investigator himself tampering with the evidence on...