At this point, i would recommend :
1. Disable/remove signature for everyone
2. More strict/difficult CAPTCHA
3. Requiring CAPTCHA when post
Maybe new forum will solve all problem we have
Captcha is easlily bypassed by "captcha data entry workers".
https://moneyconnexion.com/captcha-work.htmNearly half of the world's population which is more than 3 billion people live on less than $2.50 a day.
(Source:
https://www.dosomething.org/us/facts/11-facts-about-global-poverty)
Captcha won't deter spammers or scammers - but it will annoy plenty of genuine forum members.
Perhaps a post trust network - similar to the trust network could work. Where you if you are trusted by several people you get your captcha removed.
If you post spam your captcha returns as well as the captcha for the people that vouched for you !
Similarly - people who have a certain number of accurately reported posts become spam monitors. Five independent reports (based on clear agreed upon criteria) from spam monitors get a post removed without moderator input. Monitors that abuse that feature lose that privilege.
Both complaints and removed posts are able to be evaluated by moderators at any time.