Most people think people management is about: But after spending more than 10 years managing teams in technology, I realized something: Managing people is actually about managing energy, trust, pressure, communication, and expectations. I started my career as a technical person. Back in the early days around 2005, I was heavily focused on programming, troubleshooting, […]
I Didn’t Panic When Stock Market Dropped
Hello there, The chart below shows how stock market / IDX Composite / IHSG dropped around 15% in the past 5 days. It was a sharp fall, and it even led to a trading halt on 28 January. Imagine that, stock market fell from 9,000 to 7,600. For many people, that kind of drop feels scary. […]
Key Variant vs Key Block: A Simple Explanation
In payment security and cryptography, we often hear terms like key variant and key block. Both are related to how cryptographic keys are used and protected, but they are not the same thing. A simple way to understand it: Key variant is about modifying how a key is used. Key block is about securely packaging and protecting the key itself. […]
Product Management Is Not Just About Managing a Product
Product management is often seen as a role that focuses only on features, roadmap, and delivery timelines. But in reality, product management is much broader than that. It is about understanding problems, connecting business needs with technology, and making sure the solution being built actually creates value. From my experience in IT and Product Development, […]
Understanding ISO 8583: The Language Behind Electronic Payment Transactions
When people tap a card on an EDC machine or complete a payment at a merchant, the process looks simple from the outside. A few seconds later, the transaction is either approved or declined. But behind that short moment, there is a highly structured message exchange happening between systems. One of the most important standards […]
A Faster Path to PQC: Google Sets 2029 as the New Target
The Google PQC migration timeline for 2029 is an important signal for the cybersecurity industry. In March 2026, Google made it clear that post-quantum cryptography preparation is no longer a distant plan, but an immediate strategic priority. Previously, many organizations were aligning with longer-term expectations, often around 2030 and beyond. But this update sends a clear signal, […]
Very basic – Reverse a string
Hello There, When i was in a college (around 2000), i had learned an algorithm which i did not know the stuff that i learn here. They told me, it’s a very basic code that i need to achieve at first semester. I was dealing with a coding problem that involved reversing a string. 😩. […]