This report on Forbes has some details about the law suit by Delta Air Lines. Delta had to cancel 5,500 flights as a result of the Crowdstrike outage, and claims that it suffered losses of $500 million. It has sued Crowdstrike and Microsoft, as I predicted.

It seems clear that both Crowdstrike and Microsoft are responsible:

• Crowdstrike has released its root cause analysis, reported on by ABC News, which shows that the issue was sheer incompetence (a rookie coding error, compounded by lack of the most basic quality control). In another article it was reported that one of the testing tools, which should have detected the fault in the reference data, was itself faulty.
• Microsoft has stated that it intends to introduce more stringent testing and certification of code and reference data running at the kernel level. By doing so, it has admitted that it could have already been doing more, making the company also liable.