Hi adam,

As part of our ongoing efforts to improve the stability and reliability of our cloud services, we will begin collecting core dumps in the event of server crashes. This allows us to more quickly identify root causes, resolve issues faster, and improve the overall service experience.

Core dump collection will begin on February 27, 2026.

What's Collected

Core dumps capture the state of a process at the time of a crash and may include sensitive information resident in memory, such as connection credentials, encryption keys, or query strings.

• Data is collected and stored in the same region as the service, with additional protections 
• Data is retained only for a short period to support debugging and is securely destroyed afterward

Exclusions

Services subject to HIPAA and PCI compliance are excluded. BYOC (Bring Your Own Cloud) services are also excluded.

Action Required

If you would like to opt out, you may do so at any time via the Cloud Console on the settings tab before February 27, 2026.
If no action is taken, your services will be automatically enrolled.

If you have any questions, please reply to this email or contact our support team.

Thank you,
The ClickHouse Team