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You can either: 1. block all temp and junk domains from signing up though there will still be junk signups. 2. Add another layer of authenticity - you can use email validation API to validate that email and pass on the information to your CRM and master DB and clean it regularly. 3. You can change the flow to - user signs up - gets a verification email and then login to the product though these might increase friction and lead to drop offs.

if the signups look like human behaviour - you cant do much outside of what swarnendu said, but if its showing bot behaviour. look at implementing recapcha

Hi @Swarnendu Dutta, thank you for sharing these. 1- We've been actively blocking temp domains. 2-3 I should have mentioned in my original post that we have these in place. We use Mailgun for email validation, and we already have an account activation process in place - people who click on our verification email are what we consider MQLs and there is no major change there. But these junk signups i leading to a higher number of leads created and because of that the MQLs and SQLs number is really low. The funnel is looking bad, so I'm trying to understand how to fix that. @Niranjan Bala I'll look at getting the website audited from a security standpoint. Is there anything else I can do or implement?

For basic security, you can add honeypot captcha.

@Sourav Aggarwal Any thoughts here sir?

1. As Niranjan mentioned, implement captcha on the website that will stop both Human and Bot behaviour 2. Look at the IP address of the 400 temp domains, if they are same or atmost 4-5 IP address, you can request your infra or SRE team to block these IPs. 3. If the domains have any particular thing in common, you can remove or mark them unqualified in CRM and add the same filter in reports to not look at junk leads in the funnel

Just add Google Captcha v2 or v3?

v3 is non intrusive - so you should not see any difference