https://hnimn.art/tags/security/ Recent content in Security on Minh Tran Hugo en-us Sun, 25 Jul 2021 17:00:00 +0700 https://hnimn.art/posts/the-economics-that-make-cryptojacking-work/ Sun, 25 Jul 2021 17:00:00 +0700 https://hnimn.art/posts/the-economics-that-make-cryptojacking-work/ Renting GPUs to mine has a return-on-investment calculation that usually says no. Removing the cost line from that calculation is what turns a miner into malware, and it explains why GPU credentials are worth stealing. The shape of the argument, without the numbers, which I never wrote down. https://hnimn.art/posts/five-dollars-instead-of-an-open-port/ Tue, 16 Mar 2021 21:50:00 +0700 https://hnimn.art/posts/five-dollars-instead-of-an-open-port/ Every home service you add tempts you to forward one more port. Renting a small server as a VPN hub does not remove the internet-facing listener; it replaces a growing set of them, some on appliance firmware nobody patches, with one you administer.