[@fuskeren Participant 9 years, 8 months ago]

Hi Wiisonca,

I used to have a lot of registration spammers, this plugin solved it for me:

https://da.wordpress.org/plugins/wp-spamshield/

I haven’t had an occurence in over 6 months.

You can also go for the paid option, which also worked for me a couple of months before using wp-spamshield: https://da.wordpress.org/plugins/cleantalk-spam-protect/

As a side note, deactivating bbpress does not remove data.