David Koff
Technology Expert and Writer, formerly at Nike
Expertise: Cybersecurity, blockchain and cryptocurrencies
Education: University of Pennsylvania

Technology expert and writer with over 25 years of experience, including as a senior systems administrator for Nike and the J. Paul Getty Trust in Los Angeles.

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19 Articles
A miner wearing a mask and safety gear stands in an underground mine
Crypto mining is the process by which new tokens are created on a cryptocurrency blockchain. Here’s what you need to know about how it works.
Four peppermints
Creating your own NFT is a great way to get into the world of digital art. Here’s how to get started.
A smartphone displays numerous small images on top of a pile of money
NFTs have exploded in popularity. So, what exactly are they, and how do they work?
An Ethereum coin
Mining Ethereum is a fairly straightforward way to get involved in cryptocurrency. This guide will introduce you to the necessary steps.
A house with a digital lock on it
Multifactor authentication is essential for online security. Here’s how to get started with it.
A user looks at security icons on a tablet
Few web tools are as poorly understood as VPNs because there’s a plethora of misinformation around their purpose and function. Understanding them better will help you to get the most out of their service.
A classified folder sits next to a keyboard and mouse
Chances are, you should protect your personal information more than you currently do. Use these tools to enhance your security and guard your privacy.