Sicherheitsblog

Analysen zu Datenlecks, Sicherheitswissen und praktische Tipps, damit Ihre Daten sicher bleiben.

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Datenleck-Analyse 29. Oktober 2026

Breach report: Icepick (U.S. Department of Homeland Security, Okta SSO directory)

A leaked copy of the DHS Okta single sign-on directory exposes 41,194 records across 9 DHS components, mostly CBP, ICE and USCIS. No passwords were included.

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29. Okt 2026 Datenleck-Analyse

Inside Verifications.io: 722 Million Records, No Passwords Required

Verifications.io exposed 722,745,807 records without a single password listed. Yet names, emails, and phone numbers make it one of the most dangerous datasets in our index. Here's why password-free breaches fuel targeted phishing and fraud, and what you can do to protect yourself.

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1. Okt 2026 Datenleck-Analyse

Inside XSS.IS: How 2.4 Billion Stolen Credentials Became the Internet's Largest Breach

With 2.4 billion records, the XSS.IS Combolist represents the single largest credential breach ever indexed — more data than Facebook, LinkedIn, and Yahoo combined. Here's what makes this massive exposure so dangerous for everyday internet users.

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10. Sep 2026 Datenleck-Analyse

When Billions Fall: What the Largest Data Breaches Teach Us About Scale

Over 27 billion records now circulate in breach databases, with single incidents exposing hundreds of millions of credentials. The sheer scale of mega-breaches reveals uncomfortable truths about password reuse, credential recycling, and why your data appears in places you've never heard of.

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24. Aug 2026 Datenleck-Analyse

LinkedIn 2012: The Breach That Kept on Giving Through Credential Reuse

The 2012 LinkedIn breach exposed 164 million credentials, but the real damage came from the cascade of secondary attacks it enabled. This post examines how one breached database fueled years of account takeovers across unrelated services and reshaped how the industry thinks about credential reuse.

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17. Aug 2026 Datenleck-Analyse

The Dropbox Breach: How 68 Million Accounts Were Exposed for Four Years

In 2012, Dropbox suffered a massive breach that would not be fully understood until 2016, when 68 million account credentials surfaced online. Here is how the breach happened, why it took years to discover the full scope, and what it taught the industry about password security.

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6. Aug 2026 Datenleck-Analyse

Inside XSS.IS: How 2.4 Billion Stolen Credentials Became the Internet's Largest Password Cache

The XSS.IS Combolist contains 2.4 billion compromised email and password pairs — the largest single credential repository ever indexed. This massive aggregation reveals how credential stuffing attacks have evolved into an industrial-scale threat to every internet user.

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16. Jul 2026 Datenleck-Analyse

What 24 Billion Records Teach Us About Modern Cybersecurity Failures

Nearly 24 billion stolen records paint a stark picture: combolists now dwarf individual breaches, plaintext passwords remain epidemic, and stealer malware has become the dominant threat vector. Here's what the largest data exposures reveal about protecting yourself.

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13. Jul 2026 Datenleck-Analyse

Supply Chain Attacks: SolarWinds, Kaseya, and the Lessons We Must Learn

Supply chain attacks compromise trusted software to infiltrate thousands of organizations at once. The SolarWinds and Kaseya incidents revealed how devastating this attack vector can be and what the industry must change.

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9. Jul 2026 Datenleck-Analyse

XSS.IS Combolist Exposed 2.47 Billion Credentials: Anatomy of a Mega-Breach

The XSS.IS Combolist breach stands as one of the largest credential exposures in history, compromising 2.47 billion email addresses, usernames, and plaintext passwords. Understanding how this massive aggregation happened reveals critical lessons about password reuse and cascading security failures.

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23. Apr 2026 Datenleck-Analyse

Billion-Record Breaches: Scale Lessons from History's Largest Data Exposures

With over 19 billion records now indexed across 16,286 breaches, the cybersecurity landscape reveals a disturbing truth: credential reuse has created mega-breaches that dwarf traditional company hacks. Understanding what makes these exposures so massive can help you protect yourself.

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6. Apr 2026 Datenleck-Analyse

First American Financial: 885 Million Records Left Exposed on the Web

First American Financial inadvertently exposed 885 million records containing bank account numbers, Social Security numbers, and mortgage documents through a simple website flaw. No hacking required.

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