https://apnews.com/fc7b749abfb04525a69be340b3369d57

NEW YORK (AP) — Twitter shares tumbled Monday after a news report quantified its purge of fake and malicious accounts, noting that the aggressive action could harm its user growth.

Twitter has been open but vague about its crackdown, an effort aimed at preventing the spread of fake news and making its service more welcoming for real people.