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American Radio Relay League cyberattack takes Logbook of the World offline

ID: 649d90c2-ed21-5529-acc1-d4e15eda8c87

STIX ID: report--649d90c2-ed21-5529-acc1-d4e15eda8c87

Feed Name: Bleeping Computer

Threat Score
45/100

Date Published: 2024-05-19

Date Updated: 2026-04-20

Author: Lawrence Abrams

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The American Radio Relay League (ARRL) reported a cyberattack that disrupted its IT systems and online services — including Logbook of The World and the ARRL Learning Center — and confirmed its member database contains private information (names, addresses, call signs) though it stated it does not store credit card numbers or social security numbers; it remains unknown whether ransomware or data exfiltration occurred.

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