Topic · 1 article

Breach Data: articles and guides

1 PlayCISO article on breach data, newest first. The most recent is “Free Breach-Lookup APIs for Security Teams, Explained”.

Free Breach-Lookup APIs for Security Teams, Explained

Breach-lookup APIs let you check whether an email, domain or password has appeared in a known data breach. What the free options can and cannot do, safe ways to use them, and where they fit.

September 26, 2026

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LABNew: 170 hands-on security labs — firewall, DMARC, cloud, detection, forensics NEWSZyxel GS1900 zero-day exploited to hack nearly 1,000 switches LABTune SPF/DKIM/DMARC and watch spoofs bounce — Email Auth Lab BLOGAI Biosecurity: The Misuse Risks and the Safeguards LABCatch the attack with zero false positives — free Detection Lab NEWSAPT29 hijacks web analytics supply chain to deliver mobile exploits PLAYRun a live Cyber War Room incident simulation PLAYPractice a board report and get it AI-graded BLOGAI-Enabled Cyberattacks: How LLMs Are Misused and Stopped PLAYLive AI mock interview for security leaders NEWSDebian and Ubuntu APT flaw lets MitM attackers run code as root FREE2-minute CISO Readiness Scorecard — find your weakest area BLOGAI Influence Operations and Disinformation: Defender Guide TOOLS120 interactive security architecture diagrams TOOLSGenerate and validate an AI Bill of Materials (AIBOM)NEWSee everything PlayCISO has shipped LABNew: 170 hands-on security labs — firewall, DMARC, cloud, detection, forensics NEWSZyxel GS1900 zero-day exploited to hack nearly 1,000 switches LABTune SPF/DKIM/DMARC and watch spoofs bounce — Email Auth Lab BLOGAI Biosecurity: The Misuse Risks and the Safeguards LABCatch the attack with zero false positives — free Detection Lab NEWSAPT29 hijacks web analytics supply chain to deliver mobile exploits PLAYRun a live Cyber War Room incident simulation PLAYPractice a board report and get it AI-graded BLOGAI-Enabled Cyberattacks: How LLMs Are Misused and Stopped PLAYLive AI mock interview for security leaders NEWSDebian and Ubuntu APT flaw lets MitM attackers run code as root FREE2-minute CISO Readiness Scorecard — find your weakest area BLOGAI Influence Operations and Disinformation: Defender Guide TOOLS120 interactive security architecture diagrams TOOLSGenerate and validate an AI Bill of Materials (AIBOM)NEWSee everything PlayCISO has shipped