If you are thinking of getting a CISSP security certification, read this essay by Thomas Ptacek (you know who that is, don’t you?). Here is a quote: “a certificate that is held by less than 10% of the most respected practitioners in the industry, but that is held by more than 90% of third-string consultants and entry level IT secops, lacks some credibility.”
He might be a bit harsh, since his judgement seems biased by his personal perspective, but - you know what? - he has a point. So far, I am pretty happy that I avoided this cert.