Weekly briefing No. 41 published 4 Oct 2026
Disclosure tracker › Disclosures in 2026
Intelligence · Disclosure tracker

Disclosures in 2026

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.

5,282
Disclosures in the tracker, all years
1,995
Of those, indexed in 2026
41
Added in October
9
Added in the last 7 days
7
Sectors covered

Source: LeakTrace disclosure tracker, 16 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.

3,949 results · Disclosures in 2026. Clear filters

Medium8 Aug 2026
Canada Computers
Retail · 1,284 records
Payment card data stolen from 1,284 accounts
8 Aug 2026
Critical8 Aug 2026
135K law enforcement contacts leaked on dark web
Government · Records not stated
135K law enforcement contacts leaked on dark web
8 Aug 2026
Critical8 Aug 2026
Police officer names and emails
Government · Records not stated
Police officer names and emails exposed
8 Aug 2026
High8 Aug 2026
UK Dept for Education
Education · Records not stated
600K parent and staff contacts exfiltrated
8 Aug 2026
Critical8 Aug 2026
Snowflake via Connor Moucka
Technology · 165,000,000 records
Billions of records across 165 organizations stolen
8 Aug 2026
High8 Aug 2026
Pathstone Private Office
Finance · Records not stated
641K sensitive financial records stolen
8 Aug 2026
High8 Aug 2026
135K law enforcement contacts leaked dark web
Government · Records not stated
135K law enforcement contacts leaked dark web
8 Aug 2026
Critical8 Aug 2026
Amgen Pharmaceuticals
Healthcare · Records not stated
Patient and corporate data stolen from cloud systems
8 Aug 2026
Critical8 Aug 2026
100K+ officer and justice staff records leaked
Government · Records not stated
100K+ officer and justice staff records leaked
8 Aug 2026
High7 Aug 2026
Organisation not named
Finance · Records not stated
The disclosure as indexed does not name the organisation.
A recent wave of cyber attacks targeting financial services, private equity, and professional services has been attributed to a data extortion group known as UNC6671. "UNC6671 continues to rely on voice phishing…
7 Aug 2026
Critical7 Aug 2026
City of Coweta
Government · Records not stated
KTUL in Oklahoma reports: The City of Coweta says they are currently responding to a ransomware attack. According to officials, on Werdnesday, August 5, the City experienced at system-wide attack and immediately…
7 Aug 2026
High7 Aug 2026
Levi Strauss & Co.
Retail · Records not stated
Hackers used social engineering to steal corporate data from three employees
7 Aug 2026
High7 Aug 2026
Swiss Federal Government (BIT/FOITT)
Government · Records not stated
Hackers exploited Microsoft SharePoint vulnerabilities to breach servers and compromise 200 accounts
7 Aug 2026
High7 Aug 2026
Coinbase
Finance · Records not stated
Breach involving outsourcer fired HR employees investigating data theft; suspect retained data for 10,000+ customers
7 Aug 2026
Critical7 Aug 2026
Gaming Accounts (Multi-org)
Technology · Records not stated
11+ million gaming account credentials exposed through credential theft and infostealer malware
7 Aug 2026
High7 Aug 2026
Officer PII and justice partner emails
Government · Records not stated
Officer PII and justice partner emails exposed
7 Aug 2026
Medium7 Aug 2026
Organisation not named
Sector not stated · Records not stated
The disclosure as indexed does not name the organisation.
A critical Metabase SQL injection vulnerability was exploited in zero-day attacks to breach customer instances in data theft attacks, known to impact Framework and Tally.
7 Aug 2026
Critical7 Aug 2026
Snowflake (165 breaches)
Technology · 165,000,000 records
Canadian hacker pleaded guilty to hacking data storage platform; 165 breaches resulted, 100M+ people affected
7 Aug 2026
High7 Aug 2026
Marquis (fintech firm)
Finance · 672,000 records
Ransomware attack stole names, addresses, card numbers and sensitive data affecting 672,000 records
7 Aug 2026
Critical7 Aug 2026
Snowflake (multiple customers)
Technology · 165,000,000 records
165+ breaches resulted from Snowflake hacking conspiracy affecting 100M+ people
7 Aug 2026
High7 Aug 2026
Yearslong data breach
Healthcare · Records not stated
Yearslong data breach exposed residents' private health-related information
7 Aug 2026
Critical7 Aug 2026
TriZetto (duplicate confirmation)
Healthcare · 3,400,000 records
Confirmed year-long hack of network exposed records on 3.4 million people
7 Aug 2026
Critical7 Aug 2026
Blue Cross Blue Shield
Healthcare · Records not stated
Massive data breach affecting health and insurance information; company delayed reporting to regulators
7 Aug 2026
Critical7 Aug 2026
US Civil Service
Government · Records not stated
Thousands of civil servants' passwords exposed since early 2024, including White House-linked credentials
7 Aug 2026
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