Hash collisions in computer security

Hash collisions in computer security

Last week, Robin of the YouTube channel 8-bit Show and Tell wondered out loud on Twitter why Chrome flags Netracer 1.1, a modern indie Commodore 64 game, as malware. I think this is a classic case of hashing algorithms having gone wrong. In this blog post, I’ll explain what a hash collision is, using this collision of my hobby of retro computing and my day job of information security as an example.

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80s computer brands

80s computer brands

A small number of 80s computer brands are the same as today, but a lot more companies played in the field than now. Profit margins were higher then, so industry consolidation wasn’t the matter of survival that it is now. You might be surprised to see all of the most popular computer brands of today were around in the 80s. But many popular 1980s computers no longer exist in any form.

There’s a human element to 80s computing that the 90s erased. In this list, besides the familiar stories, you’ll find a computer designed by an engineer who grew up in public housing, computers designed by two women, and a company that didn’t survive its CEO dying in a car crash celebrating its IPO. While some survived the 80s and into the 90s or even today, others only lasted a few years. The 1980s were a make or break time, and many broke.

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eMachines never obsolete PCs: More than a meme

eMachines never obsolete PCs: More than a meme

It’s a meme from the turn of the century, an irony to end all ironies. The cheapest computers on the market at the time, which were arguably obsolete the day before you bought them, had stickers on the front bragging they were never obsolete. Of course I’m talking about the eMachines never obsolete marketing campaign.

Now, what eMachines said and what they meant by never obsolete were two very different things, but if anything that just made the stickers more ludicrous.

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APF Imagination Machine

APF Imagination Machine

The APF Imagination Machine was a hybrid game console/home computer from 1979 that sought to exploit a gap in the market. Although it was not a commercial success, it is a historically interesting machine and they were not the last console to attempt that approach.

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APF MP1000 game console from 1978

APF MP1000 game console from 1978

The APF MP1000 was a second generation video game console produced by APF, a small New York City based electronics firm that started out producing calculators, moved to a first-generation console called TV Fun that played Pong-type video games on an ordinary TV, and then decided to try to build on that success by going up against Atari and Mattel. In this blog post, we’ll talk about this rare 1978 game console.

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Microsoft QuickBasic remembered

Microsoft QuickBasic remembered

Microsoft QuickBasic was a commercially available programming language for MS-DOS. Qbasic, the Basic interpreter included with MS-DOS versions 5 and 6, was a cut-down version of QuickBasic. Most notably, it lacked the ability to compile programs into standalone executables.

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Use an IBM 5170 without a battery

Use an IBM 5170 without a battery

I got tired of my IBM 5170 PC/AT draining batteries every few months. And unlike newer PCs, operating an IBM 5170 without a battery isn’t just a matter of taking the battery out, leaving it out, and relying on the BIOS to auto configure with sensible defaults. The BIOS in the 5170 wasn’t that advanced. But if you are willing to compromise on one thing, you can use a 5170 without a battery while retaining the IBM BIOS and ROM Basic so it still feels like using an IBM.

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Why we like retro

Why we like retro

Why do we like retro? The question comes up from time to time on forums and podcasts and discussion groups. I think there is more than one answer, but none of them are terribly complicated. In this blog post, I’ll explore retro’s appeal.

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SvarDOS: FreeDOS for XT-class systems

SvarDOS: FreeDOS for XT-class systems

YouTuber Tech Tangents recorded a video about the difficulty he encountered installing FreeDOS on an IBM 5150. A similar problem will exist on any XT class system. He ended up essentially having to make his own distribution to get around the limitations. I’m sure he wishes he’d known about a FreeDOS derivative that already existed to solve his problem. That derivative is called SvarDOS.

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Scratchy the Micron

Scratchy the Micron

Have you heard of Crusty the Mac, the indestructable Macintosh SE? Let me tell you the story of Scratchy the Micron. Scratchy was a Micron Transport Trek 2 laptop, one of the best laptops money could buy in 1998. And you needed a lot of money to buy one. It cost $2,999 when it was new in 1998, the equivalent of $5,600 in today’s money.

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