The cybersecurity industry is almost entirely located in the Bay, Seattle, Tel Aviv, and Blr/Hyd, so the really active user groups are mostly in those cities.

Cybersecurity goes hand-in-hand with IT, DBA, Networking, DevOps, and OS/Systems Programming - all functions that were previously looked down upon over the last 15-20 years.

Furthermore, most American CS programs made OS internals, Computer Architecture, or Distributed Systems optional, so the junior portion of the ecosystem doesn't exist in the US anymore.