I've worked with global retail banks, investment banks, nationwide insurance firms, stock exchanges, power grid operators, biglaw firms, payroll and benefits providers, and a giant global pharma. Not one of them demanded that I or anyone I worked with possess a certification of any sort. I'm confident there are firms that want to see a CISSP --- I'm guessing they're mostly mid-range regional firms --- but it's not a bigco thing.

I second the IDS and WAF bullshit argument.