This technical post walks through the design and implementation of Secure Playground: a local web app that simulates prompt-injection attacks against large language models and demonstrates simple defenses. Provide a minimal, reproducible environment to test payloads and defensive strategies. Make it easy to add new providers and run mutation-based red-team experiments. Offer a leaderboard and scor
Low level design and SOLID Principles Srishti Prasad Oct 1 '24 #lld #javascript #solidprinciples #systemdesign 104 reactions comments 5 min read
Metasploitable2 - FTP Exploitation using vsftpd 2.3.4 Backdoor 1. Objective To identify and exploit a known vulnerability in an FTP service running on a vulnerable target machine using industry-standard reconnaissance and exploitation techniques. 2. Lab Environment Component Description Attacker Machine Kali Linux Target Machine Metasploitable2 Network Type Host-only / NAT
Financial systems must operate with a high degree of reliability. Even short periods of downtime or failure can result in significant financial loss, operational disruption, and loss of user trust. As modern systems move toward distributed microservices architectures, ensuring fault tolerance becomes both more challenging and more critical. The Challenge of Fault Tolerance In financial systems, th
This is Part 1 of a two-part series. Part 2 (coming soon): Connecting to spoke clusters from a controller using multicluster-runtime, driven by ClusterProfile. The Cluster Inventory API (multicluster.x-k8s.io) is driven by SIG-Multicluster and centered on the ClusterProfile resource. It only delivers value when something produces those ClusterProfiles. That something is a cluster manager. Today, t
At the beginning of this series, the problem seemed simple. There were a lot of rocks in the yard. Some were small. Some were large. A few were firmly in what I’ve been calling Engine Block Class. The original idea was straightforward: catalog them, maybe sell a few, and build a small system around the process. Along the way, the project grew. What We Built Across the previous posts, the Backyard
When developers travel, we usually prepare the obvious things. Laptop charger. But there is one dependency that is easy to underestimate until it breaks: mobile internet. A trip to China makes this especially obvious. Not because China is hard to travel in, but because so many basic interactions are mobile-first: navigation, translation, ride-hailing, hotel communication, ticket confirmations, pay
A defaced website is a curious problem. It's loud — anyone visiting the page can see something is wrong. But it's also quiet from a server's perspective: HTTP returns 200, your uptime monitor is happy, your TLS cert hasn't moved, and the CMS logs show a "successful" content update from a legitimate-looking session. The signal is on the rendered page, not in the metrics. I run a site at hi3ris.blue