In Spider-Man: Homecoming,
Tony Stark gives Peter Parker a highly upgraded Spider-Man suit, including many new web shooting protocols.
How did Tony know the formula for making the webs? I thought that the formula was a secret that Peter's father had hidden from OsCorp at the cost of his own life.
Is Stark doing anything else with the web formula?
I know that back stories get rewritten often, but this seems to conflict with long-standing explanations. What is the new back story?