SySS GmbH is an IT security company whose core business is penetration testing. Besides pentests, it offers red teaming, digital forensics and incident response, technical consulting, threat intelligence, live hacking demonstrations and IT security training, including awareness training and phishing tests. The company also runs its own research department and publishes security advisories, a tech blog and a pentest library. SySS provides professional services delivered by its specialists to client organisations; it is not a software product or a hosted platform.
SySS was founded in June 1998 by Sebastian Schreiber, who is its managing director. It is an owner-managed company headquartered in Tübingen, Germany, with branches in Frankfurt am Main and Munich and a subsidiary in Vienna. The sources consulted show no foreign parent company. For a European organisation, engaging SySS therefore means contracting with a company that is based and owned in Germany. Because it is a service rather than a product, how test data and reports are exchanged and stored depends on the engagement and is best agreed in the contract.