Schawb’s CEO Walt Bettinger sent clients a letter apologizing for the inconvenience caused by the company’s website outage Tuesday. Bettinger also said another attack occurred Wednesday, intermittently slowing access to the firm’s website.

“These attacks did not involve unauthorized access to client accounts or client data. We sincerely apologize to each and every one of our valued clients and recognize how frustrating this situation is,” wrote Bettinger.

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