4 ms·Why are certificate serials highlighted in red?by gkoz 12y agoWhy are certificate serials highlighted in red?mdewinter 12y agoNo particular reason. What would you do different?saganus 12y agoMaybe he meant that coloring them red means that something went wrong or that there's something that you should pay attention to. Of course I'm just speculating here.lvillani 12y agoYes, that's the same impression I got skimming through the page for a domain.