Cosmic rays causing 30,000 network malfunctions in Japan each year Sorry, but your browser needs Javascript to use this site. If you're not sure how to activate it, please refer to this site: https://www.enable-javascript.com/ Nippon Telegraph and Telephone Corp. has found that cosmic rays are causing an estimated 30,000 to 40,000 temporary malfunctions in domestic network communication devices in Japan every year. | BLOOMBERG Kyodo Apr 4, 2021 Cosmic rays are causing an estimated 30,000 to 40,000 malfunctions in domestic network communication devices in Japan every year, Nippon Telegraph and Telephone Corp. found recently. Most so-called soft errors, or temporary malfunctions, in the firm’s hardware are automatically corrected via safety devices, but experts said in some cases they may have led to disruptions.