ARRL says it was hacked by an "international cyber group"

ARRL reported a sophisticated network attack around May 12–16, 2024 that took its Logbook of the World and phone systems offline; the organization says network devices, servers, cloud systems, and PCs were compromised, has involved the FBI and external experts, and attributes the incident to a 'malicious international cyber group' but has not disclosed whether ransomware or data exfiltration occurred.