Robinhood was hit by a data breach earlier this month that exposed information on millions of customers and that hackers later demanded an extortion payment. Robinhood said that about 10 customers had more extensive account details revealed.
The trading platform said in a statement that the November 3 attack allowed the unauthorized party to obtain a list of email addresses for about 5 million people and full names for another group of about 2 million people. The company said the incident caused a limited number of people, approximately 310 in total, to have their names, dates of birth and zip codes exposed.
The unauthorized party gained access to customer support systems by posing as a customer support employee by phone, the company said. Robinhood said it is in the process of making “appropriate disclosures to affected people” and is continuing to investigate with the help of security firm Mandiant.