21.
Let's Encrypt is adding two additional remote perspectives for domain validation
(community.letsencrypt.org)
23.
Chicago O'Hare digs up 50-ton boulder under airfield, asks public for name ideas
(simpleflying.com)
27.
Plex vulnerabilities being exploited in the wild to drop a cryptominer
(www.boredhackerblog.info)
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