Authorkeith

MySejahtera privacy concerns

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Last week, a friend sent me a video of viral video by ‘Fat Bidin’, highlighting privacy concerns of the MySejahtera app. The same author (a.k.a Zan Azlee) also wrote a comment piece in Malaysiakini explaining his concerns over the Government’s contact tracing application. Specifically, he was concerned that MySejahtera had a “slew of different capabilities that is very...

Time vs. YouTube

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I asked Emily, my 7 year old daughter, why she loved YouTube so much. Specifically, why she loved **watching** others play Roblox over actually **playing** Roblox herself? It’s a strange, but common thing among children her age, as my nephews and nieces do the same for other games. No surprises then, that Google announced record profits yesterday, with YouTube alone bringing in more than $5...

Spreadsheets

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Spreadsheets are the bedrock of the modern enterprise, they’re ubiquitous, from small family business’ to large multi-nationals, and you’d be surprised by the number of critical activities that run off them. Pound-for-pound, Microsoft excel is the most valuable piece of software on the planet. But are really that good? The answer depends on what you mean by ‘good’...

Stopping my Addiction

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Hi, I’m Keith, and I’m a social media addict. I know, because I’ve seen this before. When I was around 8 years old, my father was a smoker, and I’d regularly see him leave family meals early to have a quick smoke, leaving us to finish our lunch or dinner without him. It was just something smokers did. Today, I’m not physically leaving the table like my father, but my...

The Myth of the anti-social developer

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What is the myth There’s a belief that people in IT, specifically software developers are generally anti-social, introverted, desk-loving curmudgeons who act like Sheldon from the Big Bang Theory. What’s more frustrating, is that this belief is prevalent even among those working in technology — that somehow great coders are silent geniuses who shun people, while coding in a dark...

The Drudgery of Servers

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As much as I love Serverless architectures, I find myself ‘locked-in’ to a server-ed WordPress blog. It’s a mixture of too much legacy content to migrate, lack of easy migration tools, and just the fact that WordPress for all it’s faults — just works! So rather than spend countless hours trying to migrate content, I decided to keep paying the $5/mo to DigitalOcean so...

Keith’s Adventures in DynamoDB Land

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After reading the awesome DynamoDBBook from Alex DeBrie, I was prompted to fix a long running design issue with Klayers (a separate project I maintain). Like everybody else that dives into DynamoDB headfirst, I made the mistake of using multiple tables, one for each data entity. After all, a single database consists of multiple tables — so DynamoDB would logically involve multiple DynamoDB...

Access Keys in AWS Lambda

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Let’s look at AWS Access Keys inside a Lambda function, from how they are populated into the function’s execution context, how long they last, how to exfiltrate them out and use them, and how we might detect an compromised access keys. But before that, let’s go through some basics. Lambda functions run on Firecracker, a microVM technology developed by Amazon. MicroVMs are like...

Contact Tracing Apps: they’re OK.

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I thought I’d write down my thoughts on contact tracing apps, especially since a recent BFM suggested 53% of Malaysians wouldn’t download a contact tracing app due to privacy concerns. It’s important for us to address this, as I firmly believe, that contact tracing is an important weapon in our arsenal against COVID-19, and having 54% of Malaysians dismiss outright is concerning...

Sharding SQS

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Potassium40 was a project I started to see how fast Lambda could really go. The project attempts to download the robots.txt files from 1 million websites as fast as it can. I chose robots file because — well it’s supposed to be downloaded by robots anyway, so this was both great fun, but also completely ethical as I wasn’t scraping people’s websites. The goal is still to...