Weekly briefing No. 42 published 30 Oct 2026
Intelligence · Disclosure tracker

Every public disclosure, dated and sourced.

Public breach disclosures from regulators, court filings, company notices and news reporting, each recorded with its date and a link to the original. Updated daily.

5,370
Disclosures in the tracker, all years
2,084
Of those, indexed in 2026
0
Added in November
22
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 1 Nov 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.

Worldwide · How they got in

Incidents worldwide, by country.

77 incidents from 11 countries in the last 90 days, each from a public source and reviewed before it is shown. Where the source says how the attackers got in, the row says so.

  1. Canada31 Oct 2026ChainalysisHow they got in: automated AI tools that work through many organizations at once.BleepingComputer
  2. Canada29 Oct 2026McCarthy Tétrault (with Davies also reporting a breach)The source does not say how they got in.The Globe and Mail
  3. Canada23 Oct 2026Crime Stoppers programs in OntarioHow they got in: a supplier or vendor that was compromised first.Global News
  4. Canada22 Oct 2026Toronto Crime StoppersHow they got in: a supplier or vendor that was compromised first.Global News
  5. Canada21 Oct 2026Canadian Crime Stoppers AssociationHow they got in: a supplier or vendor that was compromised first.CBC News
High1 Mar 2024
Fujitsu Limited
Technology · Records not stated
Malware compromised company systems, leading to possible data breach investigation
1 Mar 2024
Medium1 Mar 2024
City of Birmingham AL
Government · 56,000 records
56K records exposed in data breach
1 Mar 2024
Medium1 Mar 2024
Loretto Hospital
Healthcare · 89,000 records
89K patient records exposed in ransomware
1 Mar 2024
Critical28 Feb 2024
Cutout.Pro
Technology · 19,972,829 records
19,972,829 records exposed, Email addresses, IP addresses, Names, Passwords
28 Feb 2024
High28 Feb 2024
Tangerine
Technology · 243,462 records
243,462 records exposed, Dates of birth, Email addresses, Names, Passwords and 3 more
28 Feb 2024
Critical27 Feb 2024
Cutout.Pro
Technology · 20,000,000 records
20M user records exposed
27 Feb 2024
Critical25 Feb 2024
City of Hamilton
Government · Records not stated
Ransomware disrupted city services for weeks
25 Feb 2024
High25 Feb 2024
City of Hamilton Ransomware
Government · Records not stated
Ransomware disrupted city services for weeks, phone lines, transit, online services down
25 Feb 2024
High23 Feb 2024
Thyssenkrupp AG
Sector not stated · Records not stated
Cyberattack on automotive body division, employee and production data compromised
23 Feb 2024
High23 Feb 2024
ThyssenKrupp
Sector not stated · Records not stated
Cyberattack disrupted automotive steel division
23 Feb 2024
High22 Feb 2024
Facebook Marketplace
Retail · 77,267 records
77,267 records exposed, Email addresses, Geographic locations, Names, Passwords and 2 more
22 Feb 2024
Critical22 Feb 2024
RCMP
Government · Records not stated
Internal network breach, scope classified
22 Feb 2024
Critical21 Feb 2024
UnitedHealth (operations)
Sector not stated · Records not stated
Change Healthcare attack caused nationwide healthcare billing chaos
21 Feb 2024
Critical21 Feb 2024
Cencora / AmerisourceBergen (tech)
Technology · Records not stated
Pharmaceutical distributor breach affected multiple pharma companies
21 Feb 2024
Critical21 Feb 2024
UnitedHealth Group
Technology · Records not stated
$22B revenue impact from Change Healthcare ransomware
21 Feb 2024
Critical21 Feb 2024
Change Healthcare (tech)
Technology · 100,000,000 records
ALPHV ransomware caused nationwide healthcare billing disruption for months
21 Feb 2024
Critical21 Feb 2024
Cencora / AmerisourceBergen
Healthcare · 1,400,000 records
1.4M patient pharmaceutical records exposed in data exfiltration
21 Feb 2024
Critical21 Feb 2024
Change Healthcare / UnitedHealth
Healthcare · 190,000,000 records
190M patient records stolen in ALPHV ransomware attack
21 Feb 2024
Medium20 Feb 2024
43K student records exposed in data breach
Education · Records not stated
43K student records exposed in data breach
20 Feb 2024
Medium20 Feb 2024
43K student records exposed in data breach
Education · Records not stated
43K student records exposed in data breach
20 Feb 2024
Medium20 Feb 2024
43K student records exposed in data breach
Education · Records not stated
43K student records exposed in data breach
20 Feb 2024
Medium20 Feb 2024
43K student records exposed in data breach
Education · Records not stated
43K student records exposed in data breach
20 Feb 2024
Medium20 Feb 2024
43K student records exposed in data breach
Education · Records not stated
43K student records exposed in data breach
20 Feb 2024
Medium20 Feb 2024
43K student records exposed in data breach
Education · Records not stated
43K student records exposed in data breach
20 Feb 2024
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