Monthly report · fixed URL
Published 7 Nov 2026 from data generated 2026-11-06 15:53:19 UTC. Figures follow the definitions on the radar page; nothing here is estimated.
In October 2026 the US Breach Radar listed 95 incidents disclosed by US organisations, compared with 103 in September 2026 (-8 %). An incident is counted on its first disclosure date across SEC 8-K Item 1.05 filings, the HHS breach portal, state attorney-general notices and the press reports cited on the radar.
| October 2026 | September 2026 | |
|---|---|---|
| State attorney-general notices | 60 | 52 |
| HHS breach portal | 22 | 52 |
| Press reports | 18 | 1 |
| SEC 8-K Item 1.05 | 0 | 3 |
| October 2026 | September 2026 | |
|---|---|---|
| Data breach | 71 | 50 |
| Intrusion | 18 | 52 |
| Ransomware | 6 | 1 |
| October 2026 | September 2026 | |
|---|---|---|
| Other | 35 | 28 |
| Healthcare | 34 | 59 |
| Professional services | 9 | 5 |
| Education | 8 | 1 |
| Government | 5 | 1 |
| Finance | 4 | 8 |
| Manufacturing | 0 | 1 |
The most recent 60 days are incomplete: HHS posts with a lag and state notices follow the letters sent to consumers. Recent windows therefore understate the count and lag statistics lean towards short lags. The as-of date is shown on the page and every window is counted back from it.
Nobuo Otoi (ba-cybersecurity.com). US Breach Radar, monthly report 2026-10. https://ba-cybersecurity.com/radar/us/monthly/2026-10/ . Accessed 2026-11-07.
@misc{otoi_us_breach_radar_2026_10,
author = {Otoi, Nobuo},
title = {US Breach Radar, monthly report 2026-10},
howpublished = {\url{https://ba-cybersecurity.com/radar/us/monthly/2026-10/}},
publisher = {ba-cybersecurity.com},
year = {2026},
month = oct,
note = {Data: https://ba-cybersecurity.com/radar/us/data.json and https://github.com/otoinobuo/ba-radar-data . Accessed 2026-11-07}
}Counts, tables and classifications are licensed CC BY 4.0. Titles and figures quoted from third parties remain with their owners. Corrections: [email protected].
月報 · 固定 URL
2026年11月7日 発行。2026-11-06 15:53:19 UTC 生成のデータから作成。数字の定義はレーダー頁と同じで、推定は含みません。
2026年10月に米国侵害レーダーに載った事案は 95件(2026年9月は 103件、-8 %)。SEC 8-K Item 1.05・HHS・州司法長官への届出・報道のうち最初の開示日で数えています。
| 2026年10月 | 2026年9月 | |
|---|---|---|
| 州司法長官への届出 | 60 | 52 |
| HHS 届出 | 22 | 52 |
| 報道 | 18 | 1 |
| SEC 8-K Item 1.05 | 0 | 3 |
| 2026年10月 | 2026年9月 | |
|---|---|---|
| 情報漏えい | 71 | 50 |
| 不正侵入 | 18 | 52 |
| ランサムウェア | 6 | 1 |
| 2026年10月 | 2026年9月 | |
|---|---|---|
| その他 | 35 | 28 |
| 医療 | 34 | 59 |
| 専門サービス | 9 | 5 |
| 教育 | 8 | 1 |
| 政府・自治体 | 5 | 1 |
| 金融 | 4 | 8 |
| 製造 | 0 | 1 |
直近 60 日は不完全です。HHS の掲載には遅れがあり、州への届出は消費者に送る通知に続くためです。そのため直近の期間は件数を少なく見積もり、遅れの統計は短い遅れの側に偏ります。基準日(as-of)は頁に表示し、すべての期間はそこから遡って数えます。
Nobuo Otoi (ba-cybersecurity.com). 米国侵害レーダー(US Breach Radar)月報 2026-10. https://ba-cybersecurity.com/radar/us/monthly/2026-10/ . 2026-11-07 閲覧.
件数・表・分類は CC BY 4.0 で提供します。引用した題名や数値など第三者の情報の権利は各権利者にあります。訂正の連絡先: [email protected]