; (2) counter malicious cyber activity that has compromised such military networks, infrastructure, and systems; (3) leverage United States commercial and military cybersecurity technology and services to harden and defend such military networks, infrastructure, and systems; and (4) conduct combined cybersecurity training activities and exercises. (c) Briefings (1) Requirement Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense, in coordination with the Secretary of State, shall provide to the appropriate congressional committees a briefing on the implementation of this section. (2) Contents The briefing under paragraph (1) shall include the following: (A) A description of the feasibility and advisability of cooperating with the Ministry of Defense of Taiwan on the defensive military cybersecurity activities identified pursuant to subsection (b). (B) An identification of any challenges and resources that would be needed to addressed to conduct such cooperative activities. (C) An overview of efforts undertaken pursuant to this section. (D) Any other matters the Secretary determines relevant. (d) Appropriate congressional committees defined In this section, the term appropriate congressional committees means— (1) the Committee on Armed Services and the Committee on Foreign Affairs of the House of Representatives