ReCAPTCHA (config.inc.php), email validation (config.inc.php), and formHoneypot (plugin gallery) are some no-cost tools:
When a site is targeted for specific abuse, I add in akismet, but this is a paid service.
ReCAPTCHA (config.inc.php), email validation (config.inc.php), and formHoneypot (plugin gallery) are some no-cost tools:
When a site is targeted for specific abuse, I add in akismet, but this is a paid service.