Code:
ii flashplugin-nonfree 1:3.6.1 amd64 Adobe Flash Player - browser plugin
Debian doesn't update the flashplayer-plugin automatically to avoid downloading an unchecked 3rd party proprietary binary. If you want to ignore that risk for convenience do the following:
/usr/local/bin/flash-update.sh
Code:
#!/bin/sh
update-flashplugin-nonfree --install
/etc/systemd/system/flash-update.service
Code:
[Unit]
Description=update-flashplugin-nonfree
...