Jerky spammer

Somebody started spamming powr (sparkpost bounce rate 9k).

5.15pm Aidana noticed spam attack at #formspamChannel 5.25pm Sergey come up with idea of blocking all submissions which could be potential_spam? => blocks all new free users who sends more than 50 form submissions, that are received by slack 5.34pm Sergey created branch https://gitlab.com/powr/powr/-/merge_requests/4240 to stop spams code stops sending emails but keeps posting in slack (since it happens before pushing to sparkpost server) 6pm branch is deployed and bounce rate goes down 6.14 Yerassyl finds better way of filtering spammers 6.28pm new branch by Sergey: https://gitlab.com/powr/powr/-/merge_requests/4242 => spam SPAM_FORM_LIMIT is based on heroku - so that we don't push changes on numbers every time -> number of responses decreased from 50 to 30 (heroku vars SPAM_FORM_LIMIT) 6.29pm Form spammers stopped, sparkpost bounce rate 40