Yohan Perera

A reusable black grocery bag filled with various items including eggs, leafy greens, an orange in a mesh bag, and a jar of pickles, sitting in front of a doorway. The bag has a white sticker that reads "STAY HOME WE DELIVER".

Ground Rules for Shopping Groceries Online

In my previous post “Ground Rules for Grocery Shopping” I promised to share my ground rules for grocery shopping online. This writeup is a follow-up post to that promise, and today I want to share five essential ground rules you should stick to when shopping for groceries online. Unlike shopping for groceries in-person, shopping for…

A vibrant supermarket aisle with large displays of fresh produce, including peaches and apples, arranged in green crates and wooden bins. 'SAVE' signs are visible throughout the section.

Ground Rules for Grocery Shopping

Welcome to another episode of my series titled “Ground Rules”. It’s a series the content of which is based purely on my day-to-day experience in fool-proofing simple everyday tasks that affect our productivity. So far in this series, I have addressed Ground Rules for using PickMe and Uber, Ground Rules of Using Social Media for…

A high-angle, close-up shot captures a glowing red square module, likely a computer chip or core, with the word "HACKED" illuminated in bold white letters across its top surface. This module rests on a dark, intricate circuit board or futuristic cityscape, which is also bathed in a deep red glow from below, creating a sense of urgency and alarm. The detailed textures of the board's components are visible, though somewhat obscured by the strong red light.

The SLBFE Hack: More than just a Hack?

The month of April has been a busy time for both cybercriminals and infosec professionals alike. In the 25 days, that went by, PayHere was hacked while #OpSriLanka knocked several government websites offline. The latest incident involves LulzSecSL (A local offshoot of LulzSec?) breaking into an online database maintained by the SLBFE or the Sri…

A person wearing a Guy Fawkes mask (also known as a V for Vendetta mask) stands facing forward, looking directly at the camera. They are wearing a dark blue bomber jacket over a black shirt. Behind them is a brightly colored, somewhat abstract graffiti mural depicting a stylized face with snakes or tendrils emanating from it, rendered in shades of green, yellow, pink, and orange. The background is a wall that appears to be made of rough stone or concrete blocks.

#OpSriLanka is incredibly unwise and unhelpful: Here’s Why?

Having seen several posts on Facebook & Twitter calling on “Anonymous” an amateur group of cyber criminals to save Sri Lanka, the question is are we prepared to face the consequences of such an intervention? Calling on international politically motivated cybercriminals to “help” will result in large-scale cyber-attacks on our digital infrastructure which will do…

A close-up shot of a person holding a smartphone vertically in their right hand. The phone screen displays a blue interface with a white mountain icon and the word "VPN" below it, along with "You are connected" in white text, indicating an active VPN service. In the blurred background, a television screen shows blurred images, and a bowl of popcorn is visible in the lower foreground. The person's right arm, wearing a light blue striped sleeve, is visible on the right side of the frame.

Beware of these 4 Myths about VPN

When the war in Vietnam broke out, the US air force began bombing the Ho Chi Minh Trail, a network of paths and trails the guerrilla fighters used for moving combatants and supplies between North Vietnam and South Vietnam. When the US airstrikes targeted these trails, the guerrillas began using underground tunnels to continue their…

A medium eye-level shot shows a man with a beard and dark shirt holding up an open silver MacBook Pro laptop, with its screen prominently displaying the text "YOU'VE BEEN HACKED!" in bright green, pixelated letters against a black background. Only the man's chest, arms, and lower face with his beard are visible, indicating he is looking directly at the viewer while holding the laptop. The background is dark, emphasizing the glowing screen.

My Two Cents on the PayHere Hack

In my blog post titled “The Worrying State of Cybersecurity in Sri Lanka,” published last year, I warned that cybercriminals are increasingly targeting high-profile digital assets owned by government institutions and major business entities. My concern was based on emerging trends and the lack of proactive defense mechanisms in place. A year and two months…

A medium eye-level shot captures a man with a beard, wearing an orange and black plaid shirt, looking down at a smartphone in his left hand. His right hand holds a clear glass mug containing a dark beverage. Overlayed on the image are two white, transparent speech bubbles, suggesting a communication or messaging theme. To the left, a large green plant is partially visible, and the background shows a blurred white wall with shelves and some decorative items.

Thou Shalt not use SMS!

On January 25th, 1915, Alexander Graham Bell revolutionized the way we communicate when he yelled, “Watson, please come here. I want you!” Fifty-six years later Ray Tomlinson made history when he sent the first email in the year 1971. The email said, “QWERTYUIOP”. Then on December 3rd, 1992, Neil Papworth from Vodafone Inc. introduced the…

A close-up, horizontal shot captures a clear glass mason jar filled with warm, glowing string lights, lying on its side on a wet, dark surface that reflects the light. The light from the jar casts a bright orange and yellow glow, illuminating the water puddles and creating sparkling reflections. The background is a blurred wash of warm orange and red tones, suggesting a sunset or artificial lighting.

Final Memory Flashbacks: A Quantum of Solace?

The 2004 science fiction film The “Final Cut” envisions a future where every human being has a microchip implanted in their brain, silently recording every moment they see throughout their lifetime. Upon death, a professional known as “The Cutter” retrieves the recorded footage and carefully edits it into a curated, emotionally palatable narrative. This final…

5 Questions for Choosing a Cloud Storage Service

When the MP Hon. Ranjan Ramanayake was arrested with a collection of CDs containing private telephone conversations, a friend of mine commented Ranjan should have uploaded the recordings to a Cloud Storage Service instead of copying them to CDs. I do agree with him but is it as easy as it sounds? There are at…

A close-up, eye-level shot focuses on a rack of network servers, densely packed with various cables. Multiple white and blue network cables, likely fiber optic, are plugged into ports on the server units, with their green indicator lights glowing. Some red cables are visible in the foreground, out of focus. The silver server casings and their ventilation grilles are clearly visible, indicating a complex data center or server room environment.

Kiss, Kiss, Bye, Bye G Suite Legacy Free Edition!

Prior to December 6, 2012, Google allowed users around the world to sign up for the G Suite Legacy Free Edition, which was a freemium version of Google’s G Suite offering. I am one of those users who signed up. Sixteen years later in January 2022, Google announced that support for the G Suite legacy…