Deloitte, which ranks these every year (disclaimer: Deloitte recently became a sponsor of socalTECH, though that has no influence in our coverage), uses the five year revenue numbers of companies to create their listing. Cerritos-based IGNIFY is 71,San Diego’s ESET is 105, Kyriba , based in San Diego, is 184; Smith Micro , Aliso Viejo, was number 210. Perusing the Deloitte Technology Fast 500 list for this year — the ranking of the fastest growing companies in North America , based on the last five years of revenue–it’s quite surprising to note the sheer number of Southern California firms listed.