Subscribe by Email Plugin Spam

Hi There,

This week I got a notice that this plugin had been deactivated due to an error. I went in to the cpanel, renamed it and added it again. It seems to be back up & working now, but I’m curious why it got deactivated and how? The host company said it was not something they did.

I also notice that I have 272 pages of subscribers that are mostly “unconfirmed” Is there a way to stop all the spam coming in via this plugin? Like a way to prove your humanity? If there is, I can’t find it in the plugin info. It seems like an important upgrade.