>phpnuke
Takes me back to the days of WinNuke. If you had someone's IP address, you could bluescreen their computer, simple as that
https://en.wikipedia.org/wiki/WinNuke
Back on the IRC days there were plenty of easy ways to get someone's IP address, too. Just avertise a fileserver claiming to have some clickbaity shit and when your target connects you've got the digits
This is when it took a while, potentially 5-10 minutes, just to restart and get back online (good old modem noises)