Good off-/online resources for a beginner CISO

I have been sysadmin for 15+ years, went back to school a got my bachelor in IT.

Then my company needed a security officer and I applied for the job. I got the job some weeks ago and I love it. The learning curve is steap, but I've had that before in my career so that does not bother me that much.

The question I now have is this: What are some good really good books that I shoud study …

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