The U.S. and South Korea will strengthen cyber intelligence sharing and boost defenses against North Korean hackers under a new cybersecurity cooperation framework, the allies announced after a bilateral summit on Wednesday, framing it as an effort to build a “cyber umbrella” to deter attacks.

The new Strategic Cybersecurity Cooperation Framework seeks to better protect the allies’ national security networks, boost defensive cybersecurity capabilities and collaborate on capacity-building efforts, the White House stated in a factsheet released after the leaders’ summit in Washington.