Fighting Wordpress Spam: HashCash modifications
After getting far too much comment spam during the last few days, I decided to introduce hopefully effective spam countermeasures to my blog. But at the same time, I wanted the users to lose as little comfort as possible. So I tried to avoid “captchas” as they terrificly infringe accessibility.
Therefore, I tried to find a script being totally out of the visitor’s sight, and I did:
Today, I patched the original wordpress hashcash plugin which introduces a really effective way of spam protection: Once someone opens a blog entry, the plugin creates an individual comment key. After pressing the “submit” key, the visitor’s browser computes a new value out of the initial key (through a javascript function) and submits this value back to the server.
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