And don't disclose material nonpublic information (since that would run afoul of insider trading laws).
It's probably okay to say that we know the problem and here are the steps we're taking to mitigate it. It would not be okay to say something with large scale stock price implications for Google it another publicly traded corporation. For instance a Google employee shouldn't say something like "faulty solar panels fried Google's 10 largest data centers and twelve others have been lost to rebel drone strikes", even if false, since it could have a drastic impact on the earnings and future value of Google, Google's customers, and Google's competitors.
Even less obvious things like Google's plans for adding privacy features to the Chromium open source project can have a serious impact (see https://www.barrons.com/articles/google-chrome-privacy-quest...).