Many MikroTik have been hacked and been installed with Coinhive (cryptocurrency [Monero] miner) code. The vulnerability was fixed with a patch this April but many have not installed it yet especially ISPs. If you have a MikroTik router you should definitely clean and patch it (cryptocurrency can ruin such a device's hardware completely).
You should also notify your ISP about this (many large ISPs use MikroTik). It is a very serious vulnerability.
I guess Brian Krebs story didn't deter the Coinhive/pr0gramm guys from continuing to make it available to anyone. https://krebsonsecurity.com/2018/03/who-and-what-is-coinhive/