The Quantstamp Blog

Quantstamp Labs

Breaking Bad Contracts - Ethereum Gas Updates

The recent Istanbul hard fork in December affected some important smart contracts deployed on Ethereum mainnet. Thankfully, major projects such as Kyber were prepared and migrated to new contracts before the fork, but many developers are still unaware of the impact the Istanbul hard fork may have on both smart contract development and previously deployed contracts.

January 28, 2020
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Quantstamp Announcements

OmiseGO Advances Plasma with its Latest Implementation

OmiseGO's More Viable Plasma added features to plasma designed to enhance user experience.

January 27, 2020
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Quantstamp Announcements

The New Rockstars Building the Future of DeFi

Maker set the foundation for the DeFi ecosystem by creating DAI, but their impact does not end there. They facilitating the success of future DeFi rockstars and Quantstamp is providing the security.

January 10, 2020
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Quantstamp Announcements

2019 Year in Review

2019 was a great year for Quantstamp. We released a book on smart contract security, helped push forward the DeFi movement through some key audits, launched our Bounty Protocol, expanded our presence into new markets, and more.

January 9, 2020
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Quantstamp Labs

The Benefit of Functional Test Suites

A comprehensive test suite can prevent developers from accidentally merging functionality bugs into the master branch.

December 13, 2019
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Quantstamp Announcements

Quantstamp Wins Cybersecurity in Blockchain Use Case Awards

Quantstamp is excited to share that we recently won first place in the Cybersecurity in Blockchain Use Case Awards. Organized by Disruptor Daily, these awards profile companies that are developing practical use cases for the cybersecurity industry. 

December 2, 2019
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Quantstamp Labs

How to Use DeFi Safely

With eye popping interest rates on lending platforms, it’s never been more tempting to put assets into some of the promising new #DeFi applications out there today. But is security an issue? Dr. Poming Lee, Security Engineer with Quantstamp, explains how to keep your funds safe when using DeFi.

October 4, 2019
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Quantstamp Announcements

Quantstamp Enhances Security of Blockchain Certified Sports Memorabilia

On Monday, September 9th, BlockStar, a company authenticating real-world goods using blockchain technology, and DeMarchi, the iconic cycling apparel brand established in 1946, sold the world’s first blockchain certified replica of Fausto Coppi’s 1953 De Marchi Jersey for $10,500. Quantstamp facilitated the success of this sale by enhancing the security of the blockchain components and the website used to conduct the auction.

September 25, 2019
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Quantstamp Announcements

Securing DeFi with PoolTogether

Quantstamp is facilitating the future of DeFi by enhancing the security of leading open finance projects like PoolTogether, a no-loss lottery and innovative savings account application.

September 5, 2019
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Engineering Smart Contract Families for Solidity

Engineering Smart Contract Families for Solidity

Decentralized applications (dApps) (e.g., DEXes) increasingly span multiple Ethereum-compatible chains, such as a number of L2s. Although these chains are intended to be compatible with the Ethereum Virtual Machine (EVM), subtle differences in opcode implementations can significantly alter smart contract behavior and security. This poses an important question: how can developers efficiently code and manage smart contracts targeting different chains?

Quantstamp Announcements
April 24, 2025
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Will EIP-7702 Affect Your Code?

Will EIP-7702 Affect Your Code?

The upcoming EVM hardfork, Pectra, amongst other changes, will implement EIP-7702, a proposal introducing a new transaction type that allows Externally Owned Accounts (EOAs) to delegate—and later undelegate—their behavior to smart contracts. While this upgrade enhances flexibility, it also disrupts long-standing security assumptions in many deployed contracts. With the risk that malicious actors may exploit these changes once Pectra is enabled, it is crucial to assess whether your codebase might be negatively impacted.

Quantstamp Announcements
April 4, 2025
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When AI Meets Blockchain: A Guide to Securing the Next Frontier

When AI Meets Blockchain: A Guide to Securing the Next Frontier

In recent months, AI agents have attracted significant attention by the promise of assisting users and automating complex processes across diverse applications. The rapid performance improvements of Large Language Models (LLMs) in natural language processing (NLP) tasks drive this trend. However, as the capabilities and reach of these agents expand, so do the risks. The rapid pace of development, combined with the intricacies of integrating LLMs into real-world infrastructures—especially in dynamic fields like blockchain—has created an urgent need to scrutinize them for security, compliance, and operational integrity.

Quantstamp Announcements
January 8, 2025
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Monthly Hacks Roundup: March 2024

Monthly Hacks Roundup: March 2024

March was a volatile month for the web3 security landscape, with significant security breaches totalling over $152 million in losses. Read on as we dive into four major security incidents and the trends from last month 👇

Quantstamp Announcements
April 19, 2024
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Modular Account: How Audits Can Help Shape Standards And Catalyze Mass Adoption

Modular Account: How Audits Can Help Shape Standards And Catalyze Mass Adoption

Quantstamp recently conducted a smart contract audit for Alchemy’s Modular Account, a wallet implementation designed from the ground up for ERC-4337 and ERC-6900 compatibility including two plugins

Quantstamp Announcements
February 22, 2024
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Quantstamp 2023 Web3 Security Year In Review

Quantstamp 2023 Web3 Security Year In Review

As the year comes to a close, we wanted to take a moment to reflect on this year’s biggest hacks, root causes, and noteworthy trends.

Quantstamp Announcements
January 8, 2024