I remembered it as an article where a guy semi-jokingly claimed to have hacked most of the web through a supply-chain exploit and listed off a ton of clever things he did to evade all of the immediately obvious ways to notice that such a thing was happening. Pretty sure I saw it here on HN originally, but I couldn't come up with any search terms to find it in Google, Bing, DDG, HN Angolia search, etc.