While we already are far ahead of other companies in keeping up with vulnerabilities in WordPress plugins (amazingly that isn’t an exaggeration), in looking in to how we could get even better we noticed that in a recent instance were a vulnerability was exploited in a plugin, we probably could have warned our customers about the vulnerability even sooner if we had looked at the plugin when it was first closed on the Plugin Directory instead of when the vulnerability was fixed (though as far as we are aware the exploitation started after we had warned our customers of the fix). So we are now monitoring to see if any of the 1,000 most popular plugins are closed on the Plugin Directory and then seeing if it looks like that was due to a vulnerability.
Last week we started monitoring for closures of the 1,000 most popular WordPress plugins and that alerted to us the plugin Modula Image Gallery, which has 40,000+ active installations and was closed yesterday. There have been two new versions released since it was closed. The first 1.3.4 has a changelog entry of “wp.org review” and there are quite a few security related changes made in that version.