Annual breach and incident cost reports from industry analysts and named-incident postmortems. Primary sources: Verizon DBIR (every year since 2015), Ponemon/IBM Cost of a Data Breach Report, and incident-specific records (Anthem, Equifax).

Filter CATALOG.csv by content_type=breach-report. Organizations covered: Verizon, IBM, Ponemon, Anthem, Equifax, GAO.

awk -F',' '$4=="breach-report"' ../CATALOG.csv

• All documents are derivative Markdown conversions — verify against original PDFs (source_url in frontmatter) for anything relied on operationally.
• Multi-year series are useful for trend analysis; DBIR methodology changes are documented in each year's introduction.