Essays

20 pieces, newest first.

20 Sept 2025Philosophy

The Death of Authenticity

Authenticity is being undermined, and not just by technology.

13 Dec 2024Technology

Shared Signals, and Thanks for All the Fish

Fifteen species of dolphin fish cooperatively with people. An argument for security systems that tell each other what they see.

03 Jun 2022Technology

It’s Not Fair! Detecting Algorithmic Bias with Open Source Tools

Algorithms now shape bail decisions and transplant lists. The open-source tools that make them explainable enough to argue with.

15 Apr 2022Technology

Call Me Mark Jannell: The Future of Bring Your Own Identity

An assumed name that stuck for eighteen months, and what it cost when the truth came out. On bringing your own identity.

08 Apr 2021Technology

Now With More Privacy! The Rise of Nutritional Labelling and Customer Choice

Apple put nutrition labels on apps. A bank printing its own would first have to know what data it holds, and who can reach it.

11 Nov 2020Technology

The Technical Debt of Facial Recognition

The ACM called for a moratorium and three vendors stepped back. Shipping before it works is a debt, and someone else settles it.

28 May 2020Technology

The Color of 2020

In the beginning, blue did not exist. In short order, it came to be associated with health, power, and affluence. Will the same soon be said of working from home?

20 May 2020Technology

In Favor of the Shift

The shift is good for both baseball and identity.

14 Feb 2020Technology

Dating Strategy or Malware Technique?

Can you tell the difference between a bad romance and an exploit by a nation state?

29 Jan 2020Technology

When the Bill Comes Due: Securing Challenger Banks’ Growth

The ongoing surge in financial innovation can only be sustained by a continued demonstration that new technology is safe — and that it can be trusted with valuable assets.

22 Nov 2019Technology

Trust in Numbers: An Ethical (and Practical) Standard for Identity-Driven Algorithms

The story of Tarra Simmons asks 'Does the past predict the future?' and prompts a proposal for an identity-centric approach to ethics.

02 Oct 2019Technology

Strong Customer Authentication: The Potential and Peril of Biometric Authentication

A trip though customs prompts an exploration of strong authentication, its potential and its perils.

07 Aug 2019Technology

PSD2 and Two-factor Authentication: A Double Security Challenge

Open banking provides an opportunity for innovation and a challenge for consumer privacy.

10 Jul 2019Technology

The Bernoulli Principle: Epidemiological Models for Identity

How the eradication of Smallpox shows a way forward for identity models.

08 May 2019Technology

Living Like the 3%: A Secure User Experience on Financial Applications

Only 3% of financial apps deliver a secure experience for their users. What's the real cost?

01 Apr 2019Technology

A Cher-based Lament for Lost Data

Great suffering produces great art.

14 Feb 2019Technology

Last Minute Romantic Ideas for the Security-Minded

A quick list of ideas for the romantically-minded procrastinator.

06 Nov 2018Technology

I Am Spartacus: Privacy through Obfuscation and the Right to be Forgotten

The Third Servile War was over. The slave army had been defeated, and their Roman captors offered the survivors a pardon—on one condition: they must identify their leader, Spartacus.

06 Jun 2018Technology

Houston, We Have a Problem

Space debris is a growing problem. So is personal data in the cloud.

09 Oct 2017Technology

Admiral Nelson, Identity, and the Internet of Things

On October 21, 1805, the world changed. At the Battle of Trafalgar, British Admiral Horatio Nelson introduced a new strategy for naval warfare, one which points the way to an identity strategy for the Identity of Things.