https://techcrunch.com/2018/10/31/twitters-spam-reporting-tool-now-lets-you-specify-type-including-if-its-a-fake-account/

Twitter is adding more nuance to its spam reporting tools, the company announced today. Instead of simply flagging a tweet as posting spam, users can now specify what kind of spam you’re seeing by way of a new menu of choices. Among these is the option to report spam you believe to be from a fake Twitter account.

Now, when you tap the “Report Tweet” option and choose “It’s suspicious or spam” from the first menu, you’re presented with a new selection of choices where you can pick what kind of spam the tweet contains.