According to a report published by cyber security consultant Volodymyr Diachenko on LinkedIn, the personal data from an estimated 100,000 accounts has been exposed since August 18. Diachenko says he immediately notified Razer of the breach, but non-technical support staff handled the issue for a further three weeks until appropriate staff resolved the problem on September 9.
Now would be a good time to change your Razer passwords if you joined their forum, has a Razer account, and has a password which you use to login to Razer's website and services.