Comment Block Spam

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Hello All

I have a client that uses the comment block standard on a page type viewed often by its guest.

We are having issues with the comments section being spammed.

Does anyone have a fix for this issue, or are able to suggest a fix.

Thanks for your help

jeffduns
 
linuxoid replied on at Permalink Reply
linuxoid
Hi,

1. Use either C5 core Captcha or install the reCAPTCHA addon
2. Limit frequency of comment submissions from same IP
3. Better allow comments only from registered users - this will stop 99.9% of the spam
linuxoid replied on at Permalink Reply
linuxoid
If you want to improve the block yourself, I'd suggest the following:

- IP check vs IP blacklist
- Email domain check vs user defined domain blacklist
- User and server side form fields validation
- Domain DNS check for existing record
- Captcha validation
- Cross site request forgery protection (C5 token check)
- Form inputs sanitizing
- Limit on submission frequency
Gondwana replied on at Permalink Reply
Gondwana
Disallow any post that includes a hyperlink.