Live disclosure tracker · updated continuously

2026 Data Breaches Year-to-Date

2026 continues the year-over-year growth trend in confirmed disclosures. The list below updates as new breaches are reported by Verizon DBIR partners and major security news outlets.

98B+
Records Exposed
644
Incidents
94+
Countries
+104%
Breach Velocity YoY
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2026 Data Breaches Year-to-Date (644 indexed)

medium · government · Apr 15, 2026

Sweden Blames Pro-Russian Group for

In what was Sweden’s first public mention of the attack, the country’s minister for civil defense said it targeted a heating plant in western Sweden. The post Sweden Blames Pro-Russian Group for Cyberattack Last Year on

View incident → Original disclosure Indexed 2 weeks, 3 days ago
medium · other · Apr 15, 2026

100 Chrome Extensions Steal User

Published through five accounts, the extensions appear part of a coordinated campaign based on shared C&C infrastructure. The post 100 Chrome Extensions Steal User Data, Create Backdoor appeared first on SecurityWee

View incident → Original disclosure Indexed 2 weeks, 3 days ago
critical · finance · Apr 14, 2026

Personal data of 1 million

A breach at Basic-Fit exposed data of 1M members, including names, birth dates and bank details after unauthorized access. Basic-Fit, Europe’s largest gym chain, has disclosed a data breach affecting around 1 million mem

View incident → Original disclosure Indexed 2 weeks, 4 days ago
high · tech · Apr 14, 2026

Microsoft Office

Microsoft Office Remote Code Execution — Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially craft

View incident → Original disclosure Indexed 2 weeks, 4 days ago
medium · other · Apr 14, 2026

ShinyHunters claim the hack of

Leak of 8.1GB data tied to Rockstar Games includes anti-cheat code, game data, analytics and more, reportedly exposed by ShinyHunters. An 8.1GB data leak reportedly linked to Rockstar Games has surfaced, with files share

View incident → Original disclosure Indexed 2 weeks, 4 days ago
high · tech · Apr 14, 2026

Microsoft SharePoint Server

Microsoft SharePoint Server Improper Input Validation Vulnerability — Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a networ

View incident → Original disclosure Indexed 2 weeks, 4 days ago
medium · finance · Apr 14, 2026

The AI inflection point: What

AI is no longer a speculative topic for security leaders. It has moved from experimentation to implementation, and increasingly, to measurable production impact. Over the past year, my conversations with CISOs have sh

View incident → Original disclosure Indexed 2 weeks, 4 days ago
medium · education · Apr 14, 2026

McGraw-Hill

Education company McGraw-Hill has confirmed in a statement to BleepingComputer that hackers exploited a Salesforce misconfiguration and accessed its internal data. [...]

View incident → Original disclosure Indexed 2 weeks, 4 days ago
critical · finance · Apr 14, 2026

Europe’s Largest Gym Chain Says

Basic-Fit has reported that hackers have stolen names, dates of birth, and even bank account details. The post Europe’s Largest Gym Chain Says Data Breach Impacts 1 Million Members appeared first on SecurityWeek.

View incident → Original disclosure Indexed 2 weeks, 4 days ago
medium · other · Apr 13, 2026

CPUID Hacked to Serve Trojanized

Download links were replaced by a Russian-speaking threat actor to distribute a recently emerged malware named STX RAT. The post CPUID Hacked to Serve Trojanized CPU-Z and HWMonitor Downloads appeared first on SecurityWe

View incident → Original disclosure Indexed 2 weeks, 5 days ago