Confirmation testing, also known as retesting, involves verifying that defects identified during earlier tests have been fixed. The ISTQB guidelines suggest that confirmation tests are suitable candidates for automation because they are often repetitive and need to be run multiple times to confirm that the defect has indeed been fixed and does not reappear in subsequent releases. Automating these tests can save time and resources, and when incorporated into a regression test suite, they can provide continuous feedback on the status of the application under test.

References = The ISTQB Test Automation Engineer syllabus and study materials emphasize the importance of automating confirmation tests as part of a comprehensive test strategy. This includes integrating automated confirmation tests into the regression suite to ensure that previously fixed defects do not reoccur, thus maintaining the integrity of the software over time123.