Are these plugins secure?

I know a number of you use Richard Bonk’s plugins. I’m wondering if it’s still safe to use the plugins he has on his site since they haven’t been updated for a long time. (I see that he hasn’t been doing too well.)
This is the second time in a month that my site has been hacked, despite using a firewall and other security measures, and I’m wondering if these plugins have anything to do with it. Are there updates somewhere like Github?