What Are Security Experts Saying About OpenAI’s GPT-5.4-Cyber?

OpenAI has launched GPT-5.4-Cyber, a model optimized for defensive cybersecurity usage. 

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McGraw Hill Data Breach Caused by Salesforce Misconfiguration

McGraw Hill announced a data breach connected to a Salesforce misconfiguration.

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Pro-Iranian Actor Claims L.A. Metro Cyberattack

New intelligence suggests a pro-Iranian actor is responsible for the L.A. Metro cyberattack. 

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3 Quantum Realities to Confront this World Quantum Day

3 quantum realities security leaders need to confront. 

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Booking.com Customer Data Hacked, Exposed

Booking.com is warning customers that their information may have been exposed. 

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Top Secret Clearance Holder Charged With Leaking Classified National Defense Information

Former Army employee indicted for allegedly sharing classified national defense information to unauthorized individuals. 

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What Are Security Experts Saying About Claude Mythos and Project Glasswing?

Security experts share their thoughts on Claude Mythos and Project Glasswing with Security magazine. 

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Chinese Supercomputer Allegedly Hacked, 10 Petabytes of Data Stolen

Data has allegedly been stolen from a state-run Chinese supercomputer.

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Iranian-Linked Cyber Actors Target US Critical Infrastructure, Security Leaders Respond

CISA warns that Iranian-connected cyber actors are focusing U.S. critical infrastructure.

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LAPD Records Hacked and Exposed

A data breach has lead to the exposure of sensitive LAPD records. 

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New Trump Administration Budget Cuts $707M from CISA Funding

The White House plans to cut $707M from CISA funding. 

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Breach of FBI Surveillance System Considered a “Major Incident,” Security Experts Weigh In

Security leaders discuss this breach and share insights. 

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World Cloud Security Day: Breaking Down the State of the Cloud Cybersecurity and Physical Security

A snapshot of the state of the cloud in cybersecurity and physical security. 

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AI Startup Mercor, Which Works With Open AI and Anthropic, Confirms Data Breach

Mercor has faced a breach of data. 

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10 Data Security Stories to Know About (March 2026)

Security magazine reviews 10 data security events from March 2026. 

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Security Leaders Share Thoughts on Foster City Cyberattack

A ransomware attack on Foster City, California, triggered a state of emergency to access additional resources to keep systems up and running.

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Hackers Claim to Have Breached Streaming Service CrunchyRoll’s Data

Hackers claim that they breached Sony’s anime streaming service CrunchyRoll. 

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3.7M Records Exposed, Many Belonging to Sears Home Services

Three different databases were publicly exposed, amounting to 3.7 million records. 

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The FBI Buys Data to Track Movement, Location History

Director Patel stated the FBI purchases data that can be leveraged to track a person’s movement and location history.

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Stryker Update: FBI Seizes Website of Iran-Linked Hackers

The FBI has seized the website of the Iranian-linked hackers believed to be behind the recent cyberattack against Stryker. 

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