In this illustration, Elon Musk’s Twitter account is displayed on the screen of a mobile phone with the Twitter logo in the background. A whistleblower’s complaint that Twitter misled federal regulators about the company’s security risks could provide Elon Musk with fresh ammunition in his bid to get out of buying the company for $44 billion.
Sheldon Cooper | Lightrocket | Getty Images
Users who’ve been banned from Twitter for violating its…