The Team
Practitioners, not auditors.
15 years on the side of defenders – and attackers. That's what makes the difference.

Mike Gubser
Founder & Principal Security Consultant
“From network admin to attacker – and back.”
15 years of system engineering taught me how infrastructure really works: the shortcuts everyone takes, the configuration errors nobody documents, the services that 'nobody uses' yet remain open.
Today I use this knowledge on the attacker's side: not to cause harm, but to show what's possible – before someone else does. Active security research, CVE findings and the blog at clawhak.sh are not marketing, they're craft.
My clients are SMEs in Liechtenstein and Switzerland that don't have an enterprise security department, but still – or precisely because of this – want to be resilient.
Expertise
- ▸15+ years system engineering (Linux, Windows Server, VMware, Hyper-V)
- ▸Network architecture & segmentation
- ▸Active Directory security
- ▸Web application security
- ▸Cloud security (AWS, Azure)
- ▸Red team operations & OSINT
Active research
- ▸Active security research & CVE findings
- ▸Bug bounty programmes
- ▸Publications on blog.clawhak.sh
- ▸Community engagement in the security scene