An etching press is a printmaking machine that applies pressure to transfer an inked, etched plate image onto paper. The plate and paper pass through the press together, allowing ink held in the etched lines to form a print.
In cybersecurity, “etching press” is not a technical security term. It describes a physical printmaking tool, not a digital system, attack method, or defense. In the referenced article, it appears in the literal context of making etchings; no cyber incident or security claim is involved.