This technical analysis provides the most detailed view yet into the inner workings of the Pegasus spyware system. This includes confirmation of key technical capabilities such as the infection vectors and methodologies used to infect devices, supported by analysis of internal NSO Group documents, that until now had only been identified via forensic investigations. It also presents new material further validating the accuracy and significance of the dataset underpinning the original Pegasus Project investigation. Finally, this research provides an updated analysis, drawing on previously published Pegasus forensic evidence and newly released materials, to validate the technical methodology used to forensically link Pegasus spyware attacks targeting different victims as originating from the same Pegasus customer.