Terence Eden. He has a beard and is smiling.

Terence Eden’s Blog

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We've received a letter about you

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Royal coat of arms of the UK. A lion and a unicorn.

This is a retropost. It was written in July 2021, but published after I had left the Civil Service. An MP has written to the Chancellor of the Duchy of Lancaster asking about some work our department is doing. This is all rather usual for Government business. In the letter, the MP mentions me. By name. This is decidedly unusual! Civil Servants at my level are anonymous, interchangeable cogs…

How random are TOTP codes?

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Histogram of distributions. 8 is clearly higher than the rest.

I'm pretty sure that the 2FA codes generated by my bank's TOTP app have a bias towards the number 8 - because eight is an auspicious number. But is that just my stupid meaty brain noticing patterns where none exist? The TOTP algorithm uses HMAC, which in turn uses SHA-1. My aforementioned brain is not clever enough to understand how that works. Although bigger, meatier brains have assured me it …

Password Resets in an Age of MFA

· 3 comments · 100 words · Viewed ~338 times


A padlock engraved into a circuit board.

Recently, WordPress got in contact with me to say they suspect that my password was exposed in some sort of data breach. Well, it's a day ending with a "y" - so of course some scumbag has pilfered my digital identity. WordPress mandated that I change my password. But was that really necessary? Firstly, the password was uniquely generated by my password manager. It isn't re-used anywhere else.…

The complexity is the attraction - reflections on trying to use crypto

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A fiver and some coins on a table.

A few weeks ago, someone wanted to send me some crypto. After spending months studying for a Blockchain exam, I usually avoid such things. But, hey, $20 is $20. So I signed up for a wallet, installed an extension, verified my credentials, saved a seed phrase, and - without too much technical fuss - had some crypto transferred to my account. So far, so good. Compared to a traditional financial…

The Bite

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3D printed jaw with resin scaffolding.

A glistening pool of blood gently wept from the body. Crimson gore sparkled under rapid flash photography as it loosely clung to the wounds. So many wounds. Too many for this to have been an accident. "Bite marks," said the forensics officer. "A lot of bite marks." The detective peered at the ragged corpse. It was barely recognisable as human; just a series of holes where flesh ought to be. …

Review: dbrand skin for FrameWork laptop

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Stickers attacked to the underside of the laptop.

I love putting stickers on my laptops. But when it's time to move to a different laptop, what happens to all those cool stickers? After spending too many nights with a scraper and isopropanol, I decided to get a pre-cut dbrand skin. It'll protect the laptop and it will peel off in one piece, allowing me to preserve all my old stickers. I got the cheapest possible one - it's going to be covered…

The irony of TicketMaster's breach notification email

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What is Ticketmaster doing to protect customers? We have been working with industry-leading cybersecurity experts, the relevant authorities, including law enforcement, as well as credit card companies and banks. No further unauthorised activity has been seen in the cloud database since we began our investigation. We are offering you a free 12-month identity monitoring service with TransUnion. These services will be provided by Cyberscout, a TransUnion company specialising in fraud assistance and remediation services. You can sign up for this service through the following link: https://bit.ly/TU-sign-up What can I do? There is nothing you need to do. However, exposure of personal information can, in some cases, increase the risk of identity theft or fraud, so it’s always a good idea to monitor your bank accounts. If you notice any suspicious activity, contact your bank and/or credit card companies. Be cautious of unsolicited emails from unknown senders, especially those with unusual content, links, attachments, or requests for personal information over the phone. If you have any questions, you can visit https://bit.ly/Ticketmaster-Data-Security-Incident or contact us at ticketmastersupport@ticketmaster.com. Ticketmaster understands the importance of your personal information and we take its protection very seriously. We apologise for having to write to you in these circumstances.

TicketMaster has joined the long list of companies to lose their customers' information. As is common, they sent out an email to warn poor sods like me who might have had our details snaffled. Their email is particularly poor and contains a delightful example of how not to communicate issues like this. See if you can spot it: In the same breath as warning their customers to look out for…

Book Review: Dystopia X - A.E. Currie

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Book cover.

Another one in the Panopticon series. Bouncy sci-fi which scattershoots its plots all over the place. VR, Mission to Mars, evil AI, underwater cities, eyeless technomages - this has it all. It probably has a little too much crammed in. But, hey, it's a great ride. A cliffhanger every other chapter, vaguely plausible science, and mortal danger at every turn. It looked like I was about to be part …

Who can reply?

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Who can reply? Choose "Everybody" or "Nobody" Or combine these options: Mentioned users, Followed users.

Vague thoughts as they enter my brainbox. The BlueSky social network has introduced "Reply Gating" - it looks like this: You can write your hot take on Taylor Swift and not be inundated by weirdos replying to you. Nifty! This is nothing new. Twitter has it. Facebook has the concept of "audiences" to restrict who your post is visible to. And, of course, blogging has this! There is a comment …

Theatre Review: Swan Lake in-the-round

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Ballet dancers dressed as swans.

I thought I didn't know Tchaikovsky's Swan Lake. But, like all truly great cultural phenomena, it had disseminated itself through the cultureweb so thoroughly that I felt completely familiar with it. Performed in the round, from our nosebleed seats we had a stunning view of the action. The full floor of the Royal Albert Hall is used - there's so much going on that it become hard to take it all…

Mobile Phones of Doctor Who - Season 14

· 4 comments · 800 words · Viewed ~417 times


Ruby holding a phone.

Guess who's back, back again! If you're new to the blog series, this is where I attempt to identify all the mobile phones used by The Doctor and their companions. The 2024 series is incredible. Lots of plot, not too much exposition, and a whole bunch of mystery. I love it when Doctor Who goes off in a new direction. Let's take a look at the handsets used in these stories. The Church on Ruby…

How to cope with a broken HDMI port during a presentation

· 3 comments · 200 words


Laptop rotated 90 degrees so the screen is on the visualiser and the keyboard is pointing in the air. I'm giving the thumbs up.

Last week, I was part of the BarCamp London Hackathon. It had all the usual ups and downs of a Hackathon - laptops crashing, APIs failing, and HDMI ports breaking. We had a massive projector for participants to show off their work. The HDMI connection was… shit. Sorry, there's no better way to put it. It worked for about 30 seconds and then displayed a green screen. We replaced the HDMI cable. W…