Disclosure tracker › Technology disclosures
Intelligence · Disclosure tracker
Technology disclosures
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.
5,291
Disclosures in the tracker, all years
2,004
Of those, indexed in 2026
49
Added in October
9
Added in the last 7 days
7
Sectors covered
Source: LeakTrace disclosure tracker, 17 Oct 2026. Counts of records in the index, not estimates. Software advisories and security news are not counted.
3,883 results · Technology disclosures. Clear filters
Critical16 Sep 2026
Free Mobile and Free
Technology · Records not stated
Major data theft; fined €49 million in France
16 Sep 2026
High16 Sep 2026
Dell
Technology · Records not stated
Sensitive user data exposed in data breach
16 Sep 2026
Medium16 Sep 2026
Nikkei
Technology · Records not stated
17,000 impacted by data breach from Slack account hack
16 Sep 2026
Critical16 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
Data breach impacted 3.8 million individuals
16 Sep 2026
High16 Sep 2026
Substack
Technology · Records not stated
Newsletter platform notified users of data breach
16 Sep 2026
High16 Sep 2026
Cisco
Technology · Records not stated
Data breach impacting Cisco.com user accounts
16 Sep 2026
Critical16 Sep 2026
Rockstar Games
Technology · Records not stated
Data breach through Snowflake platform via Anodot access compromise
16 Sep 2026
Critical16 Sep 2026
Ticketmaster
Technology · 560,000,000 records
Data breach through Snowflake platform, part of 165-company attack campaign
16 Sep 2026
Critical16 Sep 2026
French Telco Subsidiaries
Technology · 24,000,000 records
Cybersecurity vulnerabilities contributed to breach of 24 million customer records
16 Sep 2026
Critical16 Sep 2026
AT&T
Technology · 109,000,000 records
Data breach exposed over 100 million customers across two separate incidents
16 Sep 2026
Critical15 Sep 2026
T-Mobile
Technology · 64,000,000 records
Over 64 million records leaked online by hackers
15 Sep 2026
Critical15 Sep 2026
Free Mobile and Free
Technology · Records not stated
Major data theft in France, resulted in €49 million fine from CNIL
15 Sep 2026
Critical15 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
Data breach impacted 3.8 million people's personal information
15 Sep 2026
High15 Sep 2026
Cox Enterprises
Technology · Records not stated
Data breach via Oracle E-Business Suite exposed employee and customer data
15 Sep 2026
High15 Sep 2026
Cell C
Technology · Records not stated
Data breach following cyberattack at South African telecom provider
15 Sep 2026
Critical15 Sep 2026
Optus
Technology · Records not stated
2022 cyber breach with privacy regulator lawsuit filed for privacy law violations
15 Sep 2026
Critical15 Sep 2026
AT&T
Technology · 109,000,000 records
Data breach exposing over 100 million customers across two separate incidents in 2024
15 Sep 2026
Medium14 Sep 2026
Organisation not named
Technology · Records not stated
The disclosure as indexed does not name the organisation.
A mass-scanning campaign targeting internet-exposed Vite development servers is attempting to steal cloud credentials and configurations from AWS and Azure deployments.
14 Sep 2026
Critical14 Sep 2026
T-Mobile
Technology · 64,000,000 records
Over 64 million customer records leaked online by hackers
14 Sep 2026
Critical14 Sep 2026
Unlimited Technology Systems
Technology · 3,800,000 records
Data breach impacts 3.8 million individuals
14 Sep 2026
High14 Sep 2026
Cell C
Technology · Records not stated
Data breach following cyberattack affecting South African telecom provider
14 Sep 2026
Critical14 Sep 2026
AT&T
Technology · 109,000,000 records
Two separate incidents in 2024 exposed data from 100M+ customers
14 Sep 2026
High13 Sep 2026
Chess.com (2026)
Technology · 4,653,212 records
4,653,212 records exposed, Email addresses, Geographic locations, Names, Usernames
13 Sep 2026
Critical10 Sep 2026
IDScan
Technology · Records not stated
Identity verification company IDScan has confirmed that hackers accessed customer data stored in its cloud platform, days after reports linked the company to a massive database containing more than 153 million driver's…
10 Sep 2026
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