Most plugin closures are uneventful. A developer stops responding, wp.org pulls the plugin, the listing goes dark, and that is the end of it. My WP Beacon scanner flags these all day long. I glance at them and move on. One of them recently was different. The wp.org Plugin Review Team had not just closed a plugin called wp-advanced-math-captcha. They had reached into it and deleted a single 7 KB binary file. A .dat file. Routine closures typically do not touch random binaries. So I decoded it. Th...