Hard to believe that a SIM (Security Information Management) company has made it "out". Arcsight went public yesterday at $9/share. Pure play security company IPO's are few and far between. Managing alerts and looking for abnormal behavior has been a difficult market to crack. But, based on their S-1, Arcsight has done it. Read my blog on Arcsight's chief security officer and author of "Enemy at the Water Cooler" Brian Contos. You can listen to the podcast I recorded with Brian as well.