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The FTC and 22 state AGs sue Amazon, alleging it overcharged advertisers over $20B since 2019 via hidden surcharges, with costs largely passed on to consumers (Annie Palmer/CNBC)

The Federal Trade Commission on Monday sued Amazon, alleging the e-commerce giant “secretly and systematically overcharged” …

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What a Hash Chain Can't Prove

Help Net Security covered a new open-source tool this week that writes tamper-evident audit logs for AI agents. It stores recorded agent activity in a file, each record carries a hash of the record…

  • Hash chain logs AI agent activity through hash of preceding record.
  • Unsigned hash chain only proves consistency within itself, not accuracy.
  • External witness service can't guarantee completeness or accuracy of recorded actions.

Columnar Data Structure in Java

What if we need traditional object-oriented API and extra high performance for field-wise operations in one place? I designed my CPS exactly having this in mind.

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