<A target="_blank" href="http://www.wissel.net/blog/d6plinks/SHWL-8EQHE9?Open&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Wisselnet+%28wissel.net%29">Stephan Wissel reminds us, if you don't know where all the copies of your certifier IDs are</A>, and who has access to them, your PKI (public key infrastructure) should be considered broken. He offers steps to create and maintain the integrity of your certifiers.