Mike Isaac

 Twitter app icon on a mobile phone in Philadelphia.  (AP Photo/Matt Rourke, File)

Twitter shakes up security team

Parag Agrawal, Twitter's new chief executive, fired the company’s head of security this week. Twitter’s chief information security officer is also leaving.

FILE – This Aug. 11, 2019, file photo an iPhone displays the apps for Facebook and Messenger in New Orleans. From complaints whistleblower Frances Haugen has filed with the SEC, along with redacted internal documents obtained by The Associated Press, the picture of the mighty Facebook that emerges is of a troubled, internally conflicted company, where data on the harms it causes is abundant, but solutions are halting at best. (AP Photo/Jenny Kane, File) XNC109 XNC109

Facebook profits jump 17%

Facebook said revenue rose 35% to $29 billion in the three months ending in September compared with the same period last year, while profits rose...