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Securing the Internet of Things: A Comprehensive Guide to Implementing Cybersecurity Measures for IoT Devices Research Disclaimer: This guide is based on ESP32 Arduino Core v2.0.14+, PubSubClient (MQTT) v2.8+, ArduinoJson v6.21+, and OpenSSL/mbedTLS v2.28+ official documentation. All code examples follow OWASP IoT Top 10 security guidelines and include production-tested patterns for device authentication, encrypted communication, and firmware integrity. IoT security requires defense-in-depth—no single technique is sufficient. IoT devices are uniquely vulnerable: they’re resource-constrained, physically accessible, and often deployed in unmonitored locations. The 2016 Mirai botnet (which compromised 600,000 IoT devices) and recent attacks on medical IoT devices underscore the critical need for robust security. This guide provides complete, production-ready implementations for securing IoT devices. ...

Enhancing Secure Boot with Unified Kernel Images (UKIs) ===================================================== Introduction Secure boot processes are crucial in modern computing to prevent unauthorized firmware, operating systems, or UEFI drivers from running on a computer. One of the recent developments in this area is the use of Unified Kernel Images (UKIs) to enhance boot security. In this article, we will explore the concept of UKIs and provide a step-by-step guide on how to implement them to improve secure boot processes. ...

Table of Contents Introduction Prerequisites Understanding SHA-1 and its Limitations Introduction to SHA-256 Implementing SHA-256 in Practice Migrating from SHA-1 to SHA-256 Conclusion Introduction Cryptographic hash functions play a vital role in ensuring data integrity and security in various applications. In this guide, we’ll explore the evolution of cryptographic hash functions, discuss the limitations of SHA-1, and provide a comprehensive guide to implementing and using SHA-256. Prerequisites To follow this guide, you should have a basic understanding of cryptography and hash functions. Familiarity with programming languages such as Python, C++, or Java is also recommended. ...

As a SOC analyst, one of the most critical tasks is analyzing network flow data to identify potential security threats. In this post, we’ll explore how to combine cloud-based data storage, SQL querying, and AI-powered analysis to streamline this process. Collecting Flow Data in Amazon Athena Amazon Athena provides a serverless query service that makes it easy to analyze data directly in Amazon S3 using standard SQL. Here’s how we set up our flow data collection: ...

I was able to complete my testing earlier than expected and was able to do the cutover early! This means that my migration from WordPress to Hugo is complete! What’s really cool here is the overall performance improvement to the website. Performance Improvements I have a few site monitors running against the website to tell me when it goes offline or is having issues: UptimeRobot DigitalOcean Monitoring After cutting over to Hugo this morning, I noticed a rather large improvement to my response times for the website. The below graph shows my UptimeRobot monitor: ...