SSTB now offers the Security Test Engineer exam, CT-STE.
A description of STE and the exam can be found here.
You can find syllabus and sample exam under Documents.

Combine your ISTQB exam with attending an ISTQB/SSTB accredited training course first
Accredited training  providers offer courses to help you prepare for ISTQB certification.
If you register for the course and exam at the same time and pay for both in one go:
- the price of the exam will be lower than if you register separately
- for classroom courses, you will be automatically booked for classroom exams in connection with the
  course
- for online courses, you will receive a voucher to use for any online exam
- you will have the opportunity to retake the exam, see below

Free re-take of the exam if you did not pass your exam after the course
Since SSTB has done the accreditation of the training providers, we have confidence that they are conducting the course professionally and with the right content; there are thus conditions for you to pass the subsequent exam.
Should you, after all, fail the exam, we have an offer. SSTB offers a free online re-examination.
Conditions for this:
- Your first exam was made within 3 months of the course
- Applies to courses in classroom and online
- Course and exam were booked at the same time
- The training provider is ISTQB-accredited through SSTB for the course on which the exam is based
- You have participated in the entire course
- The exam after the course was conducted by SSTB
- The re-examination applies to SSTB online and must be taken within six months of the course
- The offer is valid for ONE re-exam only

Registration for the re-exam is done here. If your registration is ok, you will receive a voucher code by email to use as payment when you register for your re-exam.

The training providers may also have partners who administer their courses.
See the list of training providers that are ISTQB accredited by SSTB here.

An ISTQB accredited training provider is someone who has extensive knowledge and experience in testing and can provide additional insight into test terminology and syllabus content to facilitate the achievement of ISTQB certification.
A course from an ISTQB-accredited training provider guarantees that the content covers all sections and parts according to the Syllabus and is therefore a good basis for your ISTQB examinations. The teacher is also certified, has knowledge of the current course and also has pedagogical skills.
Read more here