Lessons Learned from the Rise and Fall of Bitcoin

Lessons Learned from the Rise and Fall of Bitcoin

15 min read   The rise and fall of Bitcoin tells a story of greed, hope, disappointment, and fear. Bitcoin supporters aimed for a decentralized world in which payment is as simple as sending an email. They forgot that even the bitcoin network interfaces with the real world. The history of Bitcoin illustrates that to […]

Deconstructing bitcoin

Deconstructing bitcoin

7 min read Do you need a blockchain? There are several checklists to help you decide whether or not you need a blockchain. The most recent one is the Blockchain Technology Overview published by the NIST in October 2018. Others are discussed in a recent blog by Chris Hammerschmidt. All of these checklists ask whether […]

Why the Bitcoin is not such a good idea after all

Why the Bitcoin is not such a good idea after all

  Over the past few years, the Bitcoin became increasingly popular. Originally, Bitcoin was a payment instrument to do financial transactions, without having the need for an intermediate party, such as a bank. Today, Bitcoin seems to be a more speculative instrument or even a gambling game, given the volatility of the exchange rate of the […]

Choosing the right information security risk assessment framework

Choosing the right information security risk assessment framework

Operational risks are often information security risks What is often called operational risk has to do with flaws and faults pertaining to the internal processes, people, and systems or triggered by external events. For most modern businesses, most operational risks are in fact information security risks – that is, risks associated with the use of […]

What are blockchains for?

What are blockchains for?

A blockchain is a technology to implement a shared ledger that is guaranteed to be correct and unchangeable. But what are blockchains for? When do you need such a thing? Why not use a traditional database? Databases can store transactions and they can be shared. Database technology is mature and can achieve high transaction volumes. […]

IBM Watson, or how not to manage stakeholder expectations.

IBM Watson, or how not to manage stakeholder expectations.

After IBM’s question-answering system Watson won the Jeopardy! Quiz on US Television in February 2011, expectations about its commercial applicability rose sharply. In 2016 several hospitals in Asia adopted Watson to provide advice about medical treatments of oncology. Watson would use millions of pages of medical textbooks plus data about a cancer patient to help […]

Blockchains need networked business models

Blockchains need networked business models

Gurus predict that blockchains will have an impact comparable to, or even greater than, that of the internet. However, predictions are easy to make. Making correct predictions is very hard. A more fruitful exercise is to study the past to extract lessons learned. This is less attention-grabbing perhaps, but in the end, pays off more. […]