Keywords: Unix, Solaris, Linux, AIX, Windows, Oracle RDBMS & Apps, Blockchain & P2P, keymanagement, PKI, CSIRT/SOC operatie, Splunk, Perl, Bash, C, C++, multi-threaded programming, IPC, REST API, ssh, SDN, Bluecoat, Secunia, VMware, NSX, Checkpoint, HCS, Fortigate VMX, Cisco, Huawei, VOIP, SIP, BGP, Firewalls, IDS/IPS, Datacenter, packet crafting, Wireshark, nmap, Metasploit, NetCat, Nessus, Snort, pentesting, vulnerability management, emergency response, patch management, Malware analyse, Threat analyse, Tooling Devops, dataclassification, BIR, ISO27001, GDPR, AVG, System Operations, Computer Security Incident Response, Computer Emergency Response Teams