The linked FBI page https://forms.fbi.gov/check-to-see-if-your-computer-is-using-rogue-DNS https://forms.fbi.gov/check-to-see-if-your-computer-is-using... in

The linked FBI page https://forms.fbi.gov/check-to-see-if-your-computer-is-using-rogue-DNS https://forms.fbi.gov/check-to-see-if-your-computer-is-using... in turn links to this FBI hosted document (I've wrapped it in a Google Docs viewer link for convenience): http://docs.google.com/gview?url=http%3A%2F%2Fwww.fbi.gov%2Fnews%2Fstories%2F2011%2Fnovember%2Fmalware_110911%2Fdns-changer-malware.pdfis-using-rogue-DNS http://docs.google.com/gview?url=http%3A%2F%2Fwww.fbi.gov%2F... The second link is probably the simplest thing to provide you less technical family and friends, that offers both explanation and instructions for checking for compromise -- instructions that don't involve hitting an FBI test page, BTW. Note also this section from the cited FBI-hosted PDF: Second, it attempts to access devices on the victim’s small office/home office (SOHO) network that run a dynamic host configuration protocol (DHCP) server (eg. a router or home gateway). The malware attempts to access these devices using common default usernames and passwords and, if successful, changes the DNS servers these devices use from the ISP’s good DNS servers to rogue DNS servers operated by the criminals. This is a change that may impact all computers on the SOHO network, even if those computers are not infected with the malware. P.S. I will add that I am really impressed with the clarity, usefulness, and understanding of the target audience that manifests in the PDF instructions. Every time someone "bitches" about "government workers", I wish to point them to examples like this. While I remain suspicious of "Big Brother" government particularly with respect to selling out to moneyed, entrenched interests and a self-serving political elite, there are plenty of career employees generating lots of good work. (I suppose this document could have been written by a consultant -- if so, at least someone hired a good one. If you look at the PDF's properties, an author name actually shows. I didn't look into this.)