Courses / Air-Gapped Signing Bench Intensive

Flagship course

Air-Gapped Signing Bench Intensive

Build a repeatable offline signing station, run a dual-operator ceremony, and practice recovering from a corrupted transfer media event without improvising.

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Laptop on a desk with technical workspace lighting

Learning outcomes

  • Produce a photographed topology with named ports and a single egress lane.
  • Execute a dual-operator signing ceremony with a completed evidence pack.
  • Verify dual hashes across the air gap and document wipe status of transfer media.
  • Identify when a USB-based station is insufficient for the threat model.

Informational price: Lab Cohort seating from ₩2,450,000 per learner. See Pricing. No checkout on this site.

Modules

  1. Room & bill of materials Physical zoning, sealed ports, and removing “helpful” peripherals that reopen the network.
  2. Image & tooling freeze Installing from verified media, recording package versions, and storing a cold spare image.
  3. Key material handling Custody logs, PIN/passphrase roles, and what never appears in photos or chat.
  4. Ceremony choreography Operator, witness, recorder scripts with timing targets for production days.
  5. Failure-mode lab Corrupted stick, missing witness, mislabeled bag—recover without inventing a new process.

Instructor

Portrait of instructor Hae-won Cho

Hae-won Cho

Former manufacturing PKI lead who has coached offline benches for automotive and electronics suppliers in Gyeongsangbuk-do and remote APAC labs. Focuses on checklists that survive shift handovers.

Learner reviews

The failure-mode lab exposed that our wipe step was theater. We rewrote it the same week. Anonymous client in industrial automation
★★★★★ Dense but fair. I finally have language my auditors accept for the air gap photos. Sora N. · Certificate operations, Incheon

FAQ

Do you ship hardware with the course?

No. You use your approved bill of materials. We can review photos of what you already own.

Is this a certification?

No. You receive a completion letter and your reviewed evidence pack checklist—not a government or vendor certification.

What is a real limitation of this program?

We cannot validate your physical security perimeter or insider threat controls. If someone with room access can swap cables between sessions, training alone will not save the ceremony. That constraint is called out on day one.

Can we pay on this website?

No. Pricing is informational. Invoices are arranged after scoping—see Pricing and Refund Policy.