Keeping the Internet hygiene good can be challenging. There is a lot of badness around, harming not only internet users, organisations or corporate networks but also services that rely on the internet and sometimes even the integrity and stability of the internet itself. It is therefore essential to keep a certain level of internet hygiene. Among other things, internet services providers (ISPs) and national computer emergency response teams (CERTs) try to achieve that by collecting information about infected computers (so-called “bots”) in order to notify the associated broadband subscriber or network owner about compromised machines. To deliver information about infected machines to network owners and national CERTs, abuse.ch partners with Shadowserver and Spamhaus.