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blog: add CRS migration series part 4 — anomaly scoring and reporting#499

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fzipi wants to merge 6 commits intomainfrom
blog/crs-migration-part-4
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blog: add CRS migration series part 4 — anomaly scoring and reporting#499
fzipi wants to merge 6 commits intomainfrom
blog/crs-migration-part-4

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@fzipi
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@fzipi fzipi commented Apr 10, 2026

what

Add Part 4 of the CRS 3.3 → 4.25 LTS migration blog series covering anomaly scoring, the new reporting model, early blocking, and paranoia level redistribution.

why

Continues the migration guide series to help CRS users understand the scoring and reporting changes between CRS 3 and CRS 4, which are among the most impactful areas
during migration.

fzipi and others added 6 commits March 31, 2026 09:10
Covers the anomaly scoring refactor, the new tx.reporting_level model
replacing 980xxx rules, tx.early_blocking, and the impact of paranoia
level redistribution on anomaly score baselines.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Sets refLinksErrorLevel=WARNING so cross-post ref links don't break
the build when sibling posts don't yet exist on the same branch.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The author is already shown from the front matter. Adds the
related-pages shortcode to cross-link migration series posts.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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