Twitter detected unusual access patterns that led to it identifying unauthorized access attempts to the social network’s user data. Twitter said it discovered one live attack and shut it down almost immediately. Twitter’s network security and infrastructure manager wrote that the attack was neither the work of amateurs, nor an isolated incident. Washington Post said the Post website had been victimized by a sophisticated cyberattack targeted in an operation that resembled intrusions against The New York Times and Wall Street Journal and that company officials suspect Chinese hackers.”]
Source: https://www.cuinfosecurity.com/twitter-washington-post-report-cyberattacks-a-5472

