Autor: BlockchainLab

Article, Technology

Explaining how to exploit batchOverflow in smart contracts ERC20

Introduction According to a group of cybersecurity researchers a new discovery has been made in relation to a new vulnerability in the tokens of Ethereum. This perceived vulnerability relates to certain tokens based on the ERC-20 standard. The vulnerability, referred to as batchOverFlow, is described by the PeckShield startup on Medium in the following article: New batchOverflow Bug […]

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Article, Technology

Fungibility & Blockchain

In the Blockchain world, Fungibility is mostly discussed in conversations relating to ethereum and the use of ethereumapplications. So what is it, and why is it relevant? To answer this question, we need to consider tokens, tokenization and what tokens represent. Using cryptocurrency as our example – each token coin) represents the same value as […]

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Article, Technology

Explicando exploit batchOverflow en contratos inteligentes ERC20

Introducción Según un grupo de investigadores en ciberseguridad han descubierto una nueva vulnerabildiad en los tokens de Ethereum. Esta vez se trata de una vulnerabilidad en algunos tokens basados en el estándar ERC-20. La vulnerabilidad, denominada batchOverFlow, es descrita por la startup PeckShield en Medium en el siguiente artículo: New batchOverflow Bug in Multiple ERC20 Smart […]

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Article, Technology

Blockchain & Healthcare

Introduction to Blockchain Blockchain is a distributed protocol that allows to exchange information or value (tokens), between two or more parties. The information in form of transactions contained in the network is validated through consensus. Blockchain network acts as a source of trust between parties. Namely, it is a protocol that generates trust in a […]

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Article, Business

Blockchain y el Sector Salud

Introducción a Blockchain Blockchain es un protocolo distribuido que permite el intercambio de información o valor (tokens), entre dos o más partes. La información, en forma de transacciones, contenida en la red es validada a través del consenso. La red blockchain actúa como fuente única de confianza entre las partes. Es decir, es un protocolo […]

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Article, Technology

Criptografía básica para entender la tecnología blockchain

Criptografía. Del gr. κρυπτός kryptós ‘oculto’ y -grafía. 1. f. Arte de escribir con clave secreta o de un modo enigmático. La criptografía es la rama de la informática y las matemáticas que estudia los algoritmos utilizados para ocultar la información a quien no debe verla. Actualmente, son algoritmos que aseguran las comunicaciones digitales a lo […]

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Article, Technology

Basic Cryptography to understand Blockchain Technology

cryptography. From Greek κρυπτός kryptós ‘hidden secret’ and γράφειν graphein, ‘to write’. 1.The art of writing or solving codes.   Cryptography is an area of Computer Science and Mathematics that studies the algorithms used to hide information to those not allowed to see it. Currently, these algorithms secure digital communications all over the globe. Additionally, they are […]

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Article, Business

Blockchain & GDPR

La tecnología Blockchain y sus aplicaciones han supuesto un reto regulatorio para los legisladores de todo el mundo. La definición de un marco legal sólido en una fase tan temprana de la tecnología, aunque necesario, puede influir negativamente en su desarrollo. A pesar de ello, existen determinados aspectos esenciales que deben ser abordados: por ejemplo, […]

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Article, Business

Blockchain & GDPR

Blockchain technology and its applications have involve legal challenges for authorities from around the world. Defining a legal framework in this incipient phase of the technology, even though necessary, could involve a negative impact in its development. In spite of that, there are some essential aspects that should be addressed: for example: the way of […]

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Business

Grant Thornton and INESE work together to train insurance companies in Blockchain technology

The first Blockchain training session to the insurance sector was held last week, organized by INESE and given by members of Grant Thornton Blockchain’s lab from Madrid, international competence center of this multinational firm since 2015. The training included sessions on the origins of the technology, with emphasis in Bitcoin, Blockchain’s evolution, its massive adoption […]

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