---
title: "Sonic Research Highlights Quantum Vulnerability in Proof-of-Stake Blockchains"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/283391994.md"
description: "Sonic Research has discovered a major vulnerability in proof-of-stake blockchains that use elliptic-curve signatures, making them susceptible to quantum attacks. The company proposes its SonicCS technology as a solution to transition to post-quantum security by modifying the signature scheme while preserving the core consensus design."
datetime: "2026-04-20T18:55:16.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/283391994.md)
  - [en](https://longbridge.com/en/news/283391994.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/283391994.md)
---

# Sonic Research Highlights Quantum Vulnerability in Proof-of-Stake Blockchains

Sonic Research has identified a significant vulnerability in most proof-of-stake blockchains, which rely on elliptic-curve signatures and aggregation schemes. According to NS3.AI, these systems are susceptible to quantum attacks. Sonic Research suggests that its SonicCS technology can transition to post-quantum security by altering its signature scheme, while maintaining its core consensus design.

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