GitHub is hosting a Capture the Flag (CTF) event titled "A Call to Hacktion" from March 17 to 21, aimed at testing participants' skills in exploiting software security vulnerabilities using GitHub Actions. This solo contest provides an opportunity for individuals to challenge their knowledge, improve their workflow writing skills, and delve into the intricacies of workflow security. Participants are encouraged to follow @ghsecuritylab on Twitter or check the CTF page for more information, with the event being particularly beneficial for those interested in the security aspects of GitHub Actions.