Incident History

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  1. Oct 27, 2026

    1. heystack.nl has recovered.

    2. heystack.nl appears to be down.

  2. Oct 21, 2026

    1. heystack.nl has recovered.

    2. HeyStack Unavailable

      Due to a serious security vulnerability in PHP, we have temporarily taken our systems offline as a precautionary measure.

      We are taking this step to protect our systems and our customers' data. Security is our top priority.

      You can read more about the vulnerability and its implications via the National Cyber ​​Security Centre and the NOS.

      https://nos.nl/artikel/2636055-websites-van-overheid-en-in-onderwijs-offline-vanwege-lek-risico-op-hacks

    3. heystack.nl appears to be down.