---
title: 'BSC''s Quantum Defense Works, But Slows Transactions by 40%'
url: >-
  https://www.cryptocatalyst.news/articles/2026-05-19-bscs-quantum-defense-works-but-slows-transactions-by-40
canonical: >-
  https://www.cryptocatalyst.news/articles/2026-05-19-bscs-quantum-defense-works-but-slows-transactions-by-40
date: '2026-05-19T13:13:59.120605+00:00'
category: general
tags:
  - quantum
  - security
  - bsc
  - blockchain
  - throughput
  - transactions
source: CoinDesk
source_url: >-
  https://www.coindesk.com/markets/2026/05/19/bsc-s-quantum-defense-works-the-trade-off-is-40-slower-transaction-throughput
publisher: CryptoCatalyst
summary: >-
  Binance Smart Chain's quantum-resistant upgrade succeeded in its test, but it
  reduced transaction speed by 40%. The trade-off highlights the challenges of
  balancing security and performance in blockchain networks.
image: >-
  https://www.cryptocatalyst.news/images/articles/2026-05-19-bscs-quantum-defense-works-but-slows-transactions-by-40.jpg
generated_by: automated editorial pipeline
---
# BSC's Quantum Defense Works, But Slows Transactions by 40%

Binance Smart Chain's quantum-resistant upgrade succeeded in its test, but it reduced transaction speed by 40%. The trade-off highlights the challenges of balancing security and performance in blockchain networks.

Binance Smart Chain (BSC) has successfully tested a quantum-resistant upgrade, but the new security measures come at a cost. The test showed that while the network is now better protected against quantum computing threats, transaction throughput slowed by about 40%. 

The slower speeds are due to the increased size of transaction data required by the quantum-resistant algorithms. BSC's developers have acknowledged the trade-off, stating that further optimizations are needed to improve efficiency without compromising security. 

For everyday users, this means that transactions on BSC may take longer to process and confirm. While the enhanced security is a positive step, the reduced throughput could impact the user experience, especially during periods of high network activity. 

Developers and users should watch for updates from BSC on potential optimizations that could mitigate the slowdown. If you're using BSC for transactions, be prepared for longer wait times and consider this trade-off when choosing which blockchain to use for your needs. Read more → https://www.coindesk.com/markets/2026/05/19/bsc-s-quantum-defense-works-the-trade-off-is-40-slower-transaction-throughput

## Source

This article is a summary of reporting by [CoinDesk](https://www.coindesk.com/markets/2026/05/19/bsc-s-quantum-defense-works-the-trade-off-is-40-slower-transaction-throughput), written by an automated editorial pipeline. See https://www.cryptocatalyst.news/editorial-policy.

## How to cite

CryptoCatalyst.news, "BSC's Quantum Defense Works, But Slows Transactions by 40%", 2026-05-19, https://www.cryptocatalyst.news/articles/2026-05-19-bscs-quantum-defense-works-but-slows-transactions-by-40