You are misremembering. CFAA defines criminal acts not civil, so Craigslist could not sue someone under the CFAA. The DA would have to bring charges first and then the civil suit by Craigslist would reference the criminal suit.
fraudulently obtaining people's banking information can be described many ways. The prosecutors won't call it web scraping and the judge hasn't seen that although he has heard of people who steal users information to hack their banks.