DDoS Attack Incident Postmortem

On Thursday (August 17), Sienna Network faced a DDoS attack that caused a brief service outage. On Friday (August 18), bad-faith actors managed to cause another service outage by attempting to phish the domain host.

Sienna Network
Sienna Network
Published in
2 min readAug 21, 2023

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Phase 1: Thursday, August 17

Sienna Network faced a Distributed Denial-of-Service (DDoS) attack on August 17 that resulted in a brief downtime period for users.

Requests on www.sienna.network jumped from approximately 20,000 (average daily requests) to 2,250,000 over a 24-hour period. The website servers were subsequently overloaded and unable to process this massive jump in requests, rendering the website inaccessible for approximately 1 hour (between ~3:30–4:30 PM EDT).

Sienna Network core contributors took immediate steps to remedy this issue in order to prevent prolonged downtime for users.

Phase 2: Friday, August 18

On Friday (August 18), bad-faith actors attempted to phish the Sienna Network domain host, and tried to trick an employee into believing they were speaking to the official Sienna team (when in fact, they were communicating with imposters). The imposters requested that the Sienna domain (www.sienna.network) be taken down—under the false premise that it is a “fake” website. Sensing that something was not quite right, the domain host temporarily took down the Sienna website to investigate the situation.

After getting in contact with the domain host, Sienna Network core contributors took immediate steps to resolve this issue by promptly verifying ownership with the domain host and restoring the sienna.network domain.

Additional safeguards have been implemented to prevent something similar from happening again in the future.

About Sienna Network

Sienna is a cross-chain, privacy-first decentralized finance protocol built on Secret Network, that enables trust-less financial instruments, such as trading and lending with complete privacy for multiple blockchain ecosystems.

Privacy, both for individuals and organizations, is required by law and should at all times be treated as a a fundamental human right. Sienna is on a mission to protect your PII.

What blockchain is Sienna built on?
Sienna is built on Secret Network first blockchain with privacy-preserving smart contracts, or “secret contracts” that have encrypted inputs, outputs, and state.

Read more about Secret Network at https://scrt.network

More on Sienna Network

🖥 Website: https://sienna.network/

💬 Discord: https://discord.sienna.network

💬 Telegram: https://telegram.sienna.network

🐦 Twitter: https://twitter.com/sienna_network

👥 Reddit: https://www.reddit.com/r/SiennaNetwork/

📰 Blog: https://medium.com/sienna-network

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