Alex Merced's Data, Dev and AI Blog

Topic

Security

8 posts tagged “Security”.

  1. 21 min read

    Building Apache Iceberg Lakehouses That Run Without an Internet Connection

    A hospital system wants a lakehouse. Their security review says patient data never leaves facilities they control. A defense contractor wants the…

  2. 20 min read

    Cross-Cloud Credential Vending in Apache Polaris and the End of Permanent Storage Keys

    Pull up the configuration for any Spark cluster that reads a data lake and look for the storage credentials. In most organizations you find an IAM…

  3. 20 min read

    Defending the Lakehouse Gateway Against Prompt Injection and Data Exfiltration

    A support ticket contains a customer's message. Somewhere in that message is a sentence addressed to nobody who works at your company: ignore your…

  4. 17 min read

    Policy Layer for Autonomous AI Data Agents

    An autonomous agent can issue a thousand queries in the time it takes a human to read the results of one. That speed is the whole reason to build…

  5. 16 min read

    REST Catalog Credential Vending for Iceberg

    Handing a query engine a long-lived cloud storage key so it can read an Iceberg table is one of the most common and most dangerous patterns in…

  6. 27 min read

    File Encryption for the Lakehouse: The Terminology, the Machinery, and the Hard Problem of Interoperable Encrypted Tables

    For years, the open lakehouse had an honest gap that practitioners whispered about and slide decks skipped: encryption. Not the checkbox kind, every…

  7. 15 min read

    Designing Private, Air-Gapped Data Lakehouses: Scaling Iceberg in Highly Secure, On-Premises Clouds

    Some of the most important lakehouse work happens in environments that will never look like a simple public-cloud reference architecture. Defense,…

  8. 14 min read

    Securing Agent Identities in the Lakehouse

    Every lakehouse agent needs its own identity, scope, and audit trail. That is the useful lens for agent identities lakehouse in June 2026. The market…

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