Contact

Get in touch with SD-4.

We're a small team and we read every message. Pick the channel that fits your question and we'll come back to you quickly.

Find us elsewhere

We're a quiet, focused team — no broad social presence yet. The fastest way to reach a real person is by email.

Response times

General inquiries and demo requests are typically answered within one business day (Mon–Fri, 8am–6pm CT). Security and vulnerability reports are triaged the same day they arrive. We don't use chatbots — every reply comes from a person on the team.

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