Own It. Open It. Run It.
Strong open-source consulting to empower your business. We help you own your systems, control your infrastructure, and leverage Linux without the chaos.
Cosmic Umbrella takes the security of client systems and information seriously.
We follow industry best practices for system hardening, access control, monitoring, and documentation.
We prioritize open-source, auditable tools and transparent configurations to reduce risk and improve reliability.
Security practices are tailored to each client environment and defined as part of consulting engagements.
If you believe you have found a security issue, please contact: n.rubenstein@cosmicumbrella.com
Last updated: 2026