A.J. Brown, head of brand safety and ad quality at Twitter, decided to leave the company, according to an informed source on Friday.
He is the second manager in this department to leave in a matter of days. Ella Irwin, Twitter's vice president of trust and safety, told Reuters on Thursday that she had resigned. Since Tesla CEO Elon Musk acquired Twitter in October, the platform has struggled to retain advertisers, who were worried about placing their ads after the company laid off thousands of employees.