- Deutsche Bank (financial services)
- D-TRUST (certificates)
- Fraunhofer SIT (IT security training for T.I.S.P.)
- Fraunhofer IESE (IT security training for T.P.S.S.E.)
- GData (virus protection)*
- hornetsecurity (cloud and mail technology)*
- Institut für Internet-Sicherheit - if(is) (IT security consultancy)*
- isits (IT security training for T.I.S.P., T.P.S.S.E.)*
- Net at Work (PKI infrastructure)*
- NürnbergMesse (exhibition services)
- SEC (IT security training for T.P.S.S.E.)
- Secorvo (IT security training for T.I.S.P., T.P.S.S.E)
- Siemens (communication technology)
- T-Systems (communication)
* "IT Security made in Germany"