Tag Archives: recaptcha

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A number of folk have been starting to see some more spam comments appearing in their logged out comments section, posted by bots.

I’ve already written an Akismet plugin, which has helped with some of it, and Known core has also been extended with some countermeasures. However, I have wanted to see if I could do some more.

When I was wearing one of my other hats the other day, I had the opportunity to play with the new Recaptcha 3 code, and I thought I’d bring it to Known.

Recaptcha 3 takes a new approach to detecting bots. Rather than getting a popup and getting you to click on pictures (which is very very annoying, and hard for those with accessibility issues), Recaptcha 3 does some arcane magicks behind the scenes to determine who’s bot or not, and then gives you a score indicating the likelihood that you’re dealing with a human. 1.0 for high likelihood of a meat sack, 0.0 for a bot, and then any value in between.

Much like with spam detectors like Spam Assassin, you can then set your own threshold values and do this on a page by page basis.

Crucially, you’re never going to get a popup. Thank the Gods.

Anyway, I’ve built this out as a plugin. Out of the box, you’ll get protection for login, registration, and public comments, but you can extend it to protect your own custom forms without too much trouble.

Have a play!

» Visit the project on Github...

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Over the past few weeks and months I’ve had to cause to write, update and dust off a number of Elgg plugins that I’ve had kicking about. As a good open source citizen I’ve stuck them up on github so others can have a play.

Here they are, in no particular order:

» H5F 1.8

This is an Elgg wrapper around the H5F HTML5 form compatibility library written by Ryan Seddon.

This plugin lets you use handy HTML 5 form extensions like “required” and “placeholder”, as well as some of the new types like <input type=”email” /> in your forms and have them work in older browsers.

» Input Country

Input country is a wrapper around Ben Werdmuller’s phpCountryDropdown tool, and provides a handy dandy country selector input type.

Install this plugin to be able to take advantage of this in your forms.

» Profile Completeness

This plugin provides a view and a widget that displays the completeness of a profile based on the number of fields in the profile that are populated. This list of fields can be extended and modified based on a plugin hook.

I’ve used various incarnations of this plugin now for a number of clients, and since it keeps coming up I’ve tidied it up a bit and stuck it on github.

» Recaptcha

Lastly, here’s an Elgg 1.8 version of a recaptcha plugin I wrote some time ago.

It hooks into the Elgg captcha engine, providing captcha verification for registration and the “request new password” functionality out of the box. It also replaces the input/captcha view.

There are a couple of other recaptcha plugins, but I couldn’t find one which just provided the captcha and nothing else, so here’s mine.

That’s it for now, enjoy!