EasyBlog allows you to set a password to protect anyone from running the Cron URL. This can be achieved under the Settings area located under Settings > Notifications > General as shown in the screen below:
If you have setup a passphrase for your cronjob key, please remember to update your Cronjob URL accordingly. You can copy the URL that is provided to you once you save the settings and use that as your Cronjob URL:

