Unless you personally are the target of these attacks, or a supervisor or HR or executive, your personal course of action is to take no further action, unfortunately. The target has reported the issue, and presumably the front-office people are taking action.
Please keep in mind that these situations are terrifying for front-office people. They expose companies and people to great liability and other trouble. So don't be too quick to judge how they handle it publicly. For example, don't judge them on their public email message. They aren't going to tell everybody about each action they take.
If these attacks make the workplace environment toxic enough that your own work is affected, then you become a target of the attacks and can follow the reporting procedure in your company's code of conduct.