Biden issues National Security Memorandum countering Chinese cyber threats

President Biden issues a classified National Security Memorandum directing all federal departments and agencies to take action to counter Chinese government-linked cyber threats targeting US critical infrastructure. The memorandum follows FBI Director Christopher Wray's public warnings that Chinese hackers are pre-positioning in US water, energy, and communications systems to potentially disrupt them in the event of a conflict over Taiwan. The directive coordinates responses across CISA, FBI, NSA, and sector-specific agencies to harden critical infrastructure against what officials call "Volt Typhoon," a Chinese state-sponsored intrusion campaign. The memorandum reinforces broader Biden administration efforts to address Chinese cybersecurity threats.