Revisions to Wassenaar cyber export-control agreement gain industry support

International negotiators made changes to an arms-control agreement that for years had troubled U.S. tech companies -- which argued the export controls could undermine cybersecurity improvements -- with the latest revisions drawing industry applause as well as calls for additional changes.

At issue is the so-called Wassenaar Arrangement for restricting access to conventional arms and “dual-use goods,” which was expanded several years ago to include “intrusion” software, a move that tech firms said had the unintended consequence of limiting the...