The 2nd ACM/IEEE International Conference on Automation in Software Test (AST) takes place virtually at the end of May. The Empirical Software Engineering group contributes a paper by Maik Betka and Stefan Wagner on extreme mutation testing. The idea of extreme mutation testing is the detection of pseudo-tested code: code that has been executed by tests but were not actually checked for faults. We evaluated it in in an industrial setting and found several pseudo-tested methods in thoroughly tested code. Interviewed developers found this information helpful. We will continue to work on comparing different means to evaluate tests to make the feedback to developers and testers most useful.