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Pick the topic that fits — support and product issues, billing and refunds, or a security report. Include the proposal or subscription reference if you have one, and we reply to the address you give us.

Use the Security topic above for vulnerability reports and data requests. Please include reproduction steps and give us reasonable time to fix an issue before public disclosure.

Abdelrahman Moustafa, founder and mechatronics engineer. Anvil is operated as an independent software service at anvilpaper.com.