357 incidents shown, tagged approved primaries. 0 more are pending a sector and are not yet placed. 22 corroborations nest under their primary incidents and are not counted separately. So 357 plus 0 pending is 357 primaries, and the corroborations are nested, not missing. Shares are rounded to whole percent and sum to 99, not 100, from rounding.

Share of incidents tracked on this ledger, not of all breaches. Healthcare leads partly because mandatory breach-disclosure rules in that sector put more of its incidents into the public record, not because it is necessarily attacked more often.

THE FLOOR · This count is a floor, the incidents tracked to date, not a census of all breaches.