As an example of what someone in this position might do, let’s consider this story from Steve Krenzel, who was a software engineer at Twitter from 2015-2017.
When I imagine putting myself in this situation, I imagine that it's terrifying to be able to flag an issue like this and escalate it to a higher authority. But it's also important to recognize that the work you do can cause huge rippling effects, many of which can be harmful. If Steve can do it, we can too!