A post mortem is part of the Lesson's learned phase of the [[Incident response lifecycle]] in the [[Computer security]] world. It is a tool to learn from mistakes. It is also recommended in [[Site Reliability Engineering (book)]]. > Blameless postmortems are a tenet of SRE culture. For a postmortem to be truly blameless, it must focus on identifying the contributing causes of the incident without indicting any individual or team for bad or inappropriate behavior. A blamelessly written postmortem assumes that everyone involved in an incident had good intentions and did the right thing with the information they had. If a culture of finger pointing and shaming individuals or teams for doing the “wrong” thing prevails, people will not bring issues to light for fear of punishment.