Sicherheitsblog

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

2. Apr 2026 Branchennews

Verified vs. Unverified Breaches: Why 5,139 Data Leaks Haven't Been Confirmed

Out of 14,355 breaches exposing nearly 19 billion records, only 9,216 are verified. Understanding the difference between confirmed and unverified breaches could save you from false alarms—or blind spots that leave you exposed.

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30. Mär 2026 Datenleck-Analyse

Collection #1: The 773 Million Email Mega-Dump That Fueled Credential Stuffing

In January 2019, a massive credential dump called \"Collection #1\" surfaced with 773 million unique email addresses and 21 million unique passwords, compiled from years of smaller breaches.

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26. Mär 2026 Branchennews

Inside the Cyber Black Market: How Your Stolen Data Gets Packaged and Sold

Nearly 19 billion stolen records now circulate in underground markets, where cybercriminals trade your credentials like commodities. Understanding how breach data gets monetized reveals why a single password compromise can haunt you for years.

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23. Mär 2026 Datenleck-Analyse

Adobe's 2013 Breach: 153 Million Passwords Encrypted the Wrong Way

Adobe encrypted 153 million passwords using 3DES-ECB instead of hashing them. The result was a breach so badly handled it became a crossword puzzle — literally. Here's why encryption mode matters.

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19. Mär 2026 Sicherheitstipps

Your Password Is Already Stolen: Here's How to Actually Protect Yourself

Over 18.9 billion credentials sit in breach databases right now, with 9,267 datasets exposing plaintext passwords. If you're reusing passwords across accounts, attackers already have the keys to your digital life — and they're selling them for pennies.

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16. Mär 2026 Datenleck-Analyse

T-Mobile's Repeated Breaches: A Pattern of Security Failures

T-Mobile has suffered major breaches in 2018, 2019, 2020, 2021, 2022, and 2023. With hundreds of millions of records exposed, the pattern reveals systemic security challenges at one of America's largest carriers.

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12. Mär 2026 Branchennews

Nearly 19 Billion Records Exposed: Inside the Stealer Log Epidemic of 2025

While massive database breaches dominated headlines a decade ago, today's threat landscape has fundamentally shifted. Stealer logs now account for 56% of all tracked breaches, creating a relentless stream of compromised credentials that threatens every online account you own.

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9. Mär 2026 Datenleck-Analyse

Capital One: How a Cloud Misconfiguration Exposed 106 Million Records

A former AWS employee exploited a misconfigured web application firewall to steal the personal data of 106 million Capital One applicants and customers, including Social Security numbers and bank account numbers.

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5. Mär 2026 Branchennews

Over 8,700 Breaches Exposed Plaintext Passwords: Here's Why It Keeps Happening

Despite decades of security warnings, 8,733 data breaches in our database still exposed passwords in plaintext—readable text that anyone can use immediately. This preventable vulnerability affects billions of accounts and reveals a shocking pattern of negligence.

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2. Mär 2026 Datenleck-Analyse

Marriott-Starwood: 500 Million Hotel Guests Had Their Data Stolen

Attackers spent four years inside the Starwood reservation system before Marriott discovered the breach. Passport numbers, credit cards, and travel histories of half a billion guests were exposed.

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26. Feb 2026 Datenleck-Analyse

When Breaches Hit Billions: What XSS.IS and Collection #1 Teach Us

Nearly 19 billion records sit in breach databases worldwide. The largest single incident—XSS.IS Combolist with 2.47 billion credentials—reveals how password reuse transforms individual hacks into catastrophic exposure chains that threaten everyone.

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23. Feb 2026 Datenleck-Analyse

Equifax: When a Credit Bureau Loses 147 Million Social Security Numbers

The 2017 Equifax breach exposed Social Security numbers, birth dates, and addresses for nearly half the U.S. population. This breach changed the conversation about corporate responsibility for personal data.

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