Data Breach News | Latest Cybersecurity Reports – Veri Sızıntısı

Publications & Analyses

Argus Flow releases, platform announcements, press updates, and cybersecurity analyses.

PTA data breach represented by a lock icon and computer code on a dark, abstract background.
Argus Flow 02 Jun 2026

National PTA Database Reportedly Leaked on Dark Web

Cybersecurity firm UpGuard has discovered a massive database, allegedly belonging to the National Parent Teacher Association (PTA), posted on a prominent dark web forum. The leak could potentially compromise the personal information of millions of parents, teachers, and students.

The handcuffed hands of a hacker over a keyboard, arrested by the Spanish cybercrime police unit.
Argus Flow 02 Jun 2026

Spain Arrests Hacker Who Leaked Government Data

The Spanish National Police have captured a young hacker known as "Alcasec" in a raid in Madrid. He is accused of stealing and publishing personal data of personnel from key state institutions, including the National Cybersecurity Institute (INCIBE) and various ministries. The incident highlights the fragility of state digital infrastructure and the devastating impact of unified cyberattacks.

The AngelSense logo and a GPS tracking device on a background graphic about a data breach.
Argus Flow 01 Jun 2026

AngelSense Leak Exposes Most Vulnerable to Extreme Risk

The GPS tracking device AngelSense, designed for individuals with special needs, left a database exposed, leaking users' live locations, audio recordings, and passwords. The discovery by cybersecurity firm UpGuard has revealed the most private data of thousands of families.

An illustration of a server room representing the APIsec data leak, showing a security vulnerability.
Argus Flow 01 Jun 2026

Security Firm APIsec Leaks Its Own Customer Data

Cybersecurity firm APIsec.ai, which claims to serve 80% of the Fortune 100, left a database full of its own customer data exposed to the internet. The discovery by UpGuard highlights a case of profound irony in the industry.

A cloud and a broken padlock icon superimposed over the Dow Jones logo
Argus Flow 01 Jun 2026

Dow Jones Cloud Leak Exposed Data of Millions

A misconfigured cloud server belonging to Dow Jones, the parent company of The Wall Street Journal, left the personal and financial data of millions of subscribers unprotected. The leak, discovered by cybersecurity firm UpGuard, is proof of how a simple mistake can have massive consequences.

The Charter Communications logo on a computer screen with digital code and a lock icon in the background.
Argus Flow 01 Jun 2026

Charter Breach Could Expose Nearly 5 Million People

US telecom giant Charter Communications is reeling from a massive data breach that could impact nearly 5 million customers. So, what happens now?

A lock and warning symbol on a smartphone screen, representing the concept of a data breach.
Argus Flow 01 Jun 2026

Massive Data Breach Allegations Rock Trump Mobile

The cybersecurity world is reeling from news of a colossal alleged data breach targeting Trump Mobile. Personal information, phone numbers, and even location data of millions of subscribers are reportedly compromised. This incident, combined with ongoing FIFA World Cup phishing attacks and supply chain threats, paints a grim picture.

Charter Communications logo with a background of digital code and a padlock symbolizing a cyberattack.
Argus Flow 01 Jun 2026

Charter Data Breach Exposes Millions of Customers

US telecom giant Charter Communications confirmed that the ShinyHunters cybercrime gang stole personal information from 4.9 million customers. The leaked data includes names, addresses, and phone numbers.

The 23andMe logo in front of the California Attorney General's office with a broken shield icon.
Argus Flow 01 Jun 2026

California Sues Former 23andMe Over Data Breach

California Attorney General Rob Bonta is suing the genetic testing giant 23andMe, now known as Chrome Holding Co., over the 2023 breach that exposed sensitive genetic data of nearly 7 million users. The lawsuit alleges inadequate security measures.

The Microsoft Defender shield logo on a blue background, representing the new automatic endpoint isolation feature.
Argus Flow 26 May 2026

Microsoft Defender Will Now Automatically Lock Down Hacked Devices

Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to stop attackers trying to move laterally across the network. The move aims to ease the burden on security operations centers (SOCs).

A smartphone displaying the 7-Eleven 7NOW app logo with a lock icon superimposed on it.
Argus Flow 26 May 2026

7-Eleven Data Breach Hits 185,000 Users

The Japanese retail giant 7-Eleven has confirmed a data breach in its 7NOW delivery app, exposing the personal information of approximately 185,000 users. The breach includes addresses, phone numbers, and partial payment information.

The exterior of a 7-Eleven store at night, illustrating a cybersecurity data breach concept.
Argus Flow 26 May 2026

7-Eleven Data Breach Hits 185,000 People

The cyber extortion gang ShinyHunters infiltrated the systems of convenience store giant 7-Eleven, stealing the personal information of nearly 185,000 people. The breach, revealed by Have I Been Pwned, is still unfolding.