If you didn't get a chance to attend S4x23 to hear the talks, or you simply haven't heard enough from Spaf yet, here is a recording of the keynote interview with Spaf by Dale Peterson. The interview covered a lot of ground about the nature of defensive security, the new Cybermyths book (got yours yet?), OT security, the scope of security understanding, having too much information, and having a good security mindset.

This and other interviews and talks Spaf has given are on the Professor Spaf YouTube channel.