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  Power Grid Simulation System 02 : FDI Power Outage Attack Case Study

We are excited to share that the Power Grid Simulation System we developed was used as part of one red team's targeted critical infrastructure system the international cyber exercise Crossed Swords 2024 which conducted in December 2024. In this article, we will introduce one power outage attack case study which use the Power Grid Simulation System as the demo platform for OT cyber security workshop. Project Design Purpose: This case study demonstrates using the Power Grid Simulation System as a...

       2025-01-11 07:35:45

  Do Not Be Misled by ‘Build an App in 5 Minutes’: In-Depth Practice with Cursor

In August this year, I tried out Cursor and was thoroughly impressed, prompting me to write an introductory article about it. Soon after, I transitioned my daily work environment entirely from GitHub Copilot + JetBrains to the paid version of Cursor. After several months of use, it has felt incredibly smooth. While using it myself, I’ve often recommended Cursor to colleagues and friends. However, many of them still have questions, such as: What advantages does it have over native ChatGPT ...

   ARTIFICIAL INTELLIGENCE,GUIDE,CURSOR,CODE EDITING,WINDSURF,DISCUSSION     2024-12-17 21:30:22

  Python PLC Honeypot: Env Deployment And Attack Detection

In the previous article, we introduced the design of Python PLC Honeypot Project, this article will provide detailed step-by-step instructions on how to deploy and use the honeypot system in your environment for detecting potential attacks on OT (Operational Technology) networks. The article includes three main section:   Design of Attack Alert and Notification Function Honeypot deployment: an example deployment of a mixed OT protocol honeypot, consisting of a simple setup with...

       2024-12-01 00:27:33

  Why (offset, limit) is slow in database select?

Starting from a problem Five years ago when I was working at Tencent, I found that MySQL request speed was very slow in the pagination scenario. With only 100,000 data, a select query on a single machine took about 2-3 seconds. I asked my mentor why, and he asked in return, "In an indexing scenario, what is the time complexity to get the nth largest number in MySQL?" The pursuit of the answer Confirming the scenario Assuming there is an index on the "status" column, a query like "select * from t...

   SLOW,LIMIT,OFFSET,MYSQL     2023-03-12 05:21:02

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