The leak adds to the challenges facing the Elon Musk-owned company, which is trying to identify the person responsible and any other people who downloaded the code.

Look for a menu option that has the word "Source" in it, such as "View Page Source." Select that option to view a window that displays the page's HTML source code.

"Though no private information was clearly visible nor searchable on any of the web pages, the newspaper found that teachers' Social Security numbers were contained in the HTML source code of the ...