Sicherheitsblog

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

Sicherheitstipps 2. November 2026

Email Header Analysis: How to Trace Suspicious Emails to Their Source

The \"From\" address in an email can be easily faked, but email headers contain a trail of metadata that reveals where a message actually originated. This guide teaches you how to read email headers to verify legitimacy and trace suspicious messages.

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Alle Datenleck-Analyse Sicherheitstipps Branchennews

29. Okt 2026 Datenleck-Analyse

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.

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.

26. Okt 2026 Sicherheitstipps

Cryptocurrency Wallet Security: Protecting Your Digital Assets

Unlike traditional banking, cryptocurrency offers no chargebacks, no fraud department, and no account recovery. If your wallet is compromised, your funds are gone permanently. This guide covers the essential practices for securing cryptocurrency wallets against theft.

22. Okt 2026 Branchennews

Verified vs. Unverified Breaches: Why 5,541 Data Leaks Don't Tell the Whole Story

With 30,742 verified breaches among 36,283 total incidents in our database, understanding the difference between confirmed and unverified leaks is critical for assessing your real exposure. Not all breach reports are created equal—and knowing which ones to trust can mean the difference between panic and informed action.

19. Okt 2026 Sicherheitstipps

Public Wi-Fi Risks: What Is Actually Dangerous and What Is Hype

Public Wi-Fi has long been portrayed as a digital minefield, but the real risk landscape has changed significantly with widespread HTTPS adoption. This post separates genuine public Wi-Fi threats from outdated fears and explains what precautions actually matter today.

15. Okt 2026 Branchennews

Plaintext Passwords Exposed in Over 31,000 Breaches: Why Companies Still Fail

Despite decades of security warnings, plaintext passwords remain the most commonly exposed data type across 31,585 breaches in our database. This fundamental security failure puts billions of users at risk and reveals why even basic protection measures are ignored.

12. Okt 2026 Sicherheitstipps

IoT Device Security: When Your Smart Home Becomes a Vulnerability

Smart thermostats, cameras, doorbells, and voice assistants make life convenient, but each one is a computer on your network that may be poorly secured. This post covers the real risks of IoT devices and practical steps to protect your connected home.

8. Okt 2026 Branchennews

Why Email and Password Combos Are Cybercriminals' Favorite Target

Over 31,000 breaches expose plaintext passwords alongside email addresses—the perfect combination for account takeover attacks. Understanding which data types appear most frequently in breaches reveals exactly what attackers prize most.

5. Okt 2026 Sicherheitstipps

Gaming Account Security: Protecting Your Digital Investments

Gaming accounts can hold thousands of dollars in purchased games, virtual items, and in-game currency. Account theft is a booming underground economy. This guide covers the threats facing gamers and practical steps to lock down your accounts across every major platform.

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.

28. Sep 2026 Branchennews

Medical Data Breaches: HIPAA, Healthcare Records, and Your Rights

Healthcare data is among the most valuable on the black market, fetching ten to forty times the price of stolen credit card numbers. This post examines why medical breaches are so damaging, what HIPAA actually requires, and what rights you have when your health data is compromised.