Roku Hit By Second Security Breach; 576,000 Accounts Compromised, Fewer Than 400 Affected by Fraudulent Purchases

Roku says 576,000 additional user accounts were compromised in a second security breach, after 15,000 were exposed last month
Hackers made unauthorized purchases on fewer than 400 compromised accounts; Roku is refunding affected users
Roku has enabled two-factor authentication for all user accounts as a security measure
The company believes credentials were stolen from other online accounts, not its own systems
Roku is advising users to create strong, unique passwords and be vigilant against suspicious communications