That is correct for the beta exam: Individuals who hold any associate level certification or the Cloud Practitioner certification are eligible for the AWS Certified Security – Specialty beta exam. (from https://aws.amazon.com/certification/beta-exam/)
However, please note that the exam was being offered most recently between January 15, 2018 and March 2, 2018 so there isn’t currently a way to take the AWS Certified Security – Specialty Beta Exam (as far as I know).
I took the Security exam, has anybody heard anything about when we will hear the results. I suspect everyone get them in a big bang fashion given they are making a baseline of all the papers sat for the pass mark. I was kinda hoping mid April given the 12 week guideline and the start of the first Jan 15th exam beta date.
No it is not anymore https://d1.awsstatic.com/training-and-certification/eligibilityupdates/AWS%20Certified%20Security%20Specialty_Exam%20Guide_v1.6_FINAL.pdf