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Umitomo
Umitomo

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Weekly Dev Log 2026-W06

๐Ÿ—“๏ธ This Week

  • Made a little more progress in the SwiftUI tutorial๐Ÿฆพ
  • Started the journey of building my future portfolio siteโœˆ๏ธ First, I created the project files and set up a repository on GitHub. I also started reserching React Router v7 by reading its documentation. I'm moving forward little by little๐Ÿ”ฅ
  • Completed the ContAInment room from the AI Security Learning Path on TryHackMe this week๐Ÿค–

๐Ÿ’ก Thoughts on the ContAInment Room

This room was a hands-on investigation exercise set in a scenario where a company had suffered a security breach, resulting in important data being encrypted and used for blackmail. The goal was to investigate the compromised environment and discover the hidden flags๐Ÿ”Ž

I felt that this room built nicely on the concepts I learned in the previous AI Forensics room. One thing I especially enjoyed was solving the investigation by using a dedicated AI assistant available inside the victim environment๐Ÿค–

As I worked through the challenge, I had to think carefully about what looked suspicious and follow clues step by step while actively using Linux commands. It also turned out to be a great review of Linux operations and practical investigation workflows๐Ÿ”ฅ


๐Ÿ“ฑ iOS (SwiftUI)

  • Worked through the SwiftUI tutorial and completed Sections 7 and 8: "Create an Algorithm for Badges"

๐ŸŒ Web Development

  • Posted my weekly dev log on Dev.to ๐Ÿ“
  • Created a new React Router v7 project for my future portfolio site.

๐Ÿ” Security (TryHackMe)

  • Completed the ContAInment room (part of the AI Security Learning Path) on TryHackMe.

๐Ÿ’ก Key Takeaways

๐Ÿ“ฑ SwiftUI Learning

Section 8: Calculate and Show Streaks

  • Learned how to calculate a daily streak by comparing saved dates with the current day.
  • Understood how reversing the array helps process moments from newest to oldest.
  • Learned how map and compactMap can transform Moment objects into simple day offsets like [0, 1, 2].
  • Understood how Calendar.dateComponents calculates date differences in calendar-based units.
  • Learned that multiple moments on the same day should count as a single streak day.
  • Realized that the streak variable represents the next expected day offset during the calculation.
  • Learned that comparing daysAgo == streak is a simple way to detect consecutive days.
  • Understood why using the end of the current day makes streak calculations more stable and predictable.
  • Learned that @ViewBuilder is used to build conditional or multiple-view UI structures, while Group is mainly used to organize existing views or share modifiers without affecting layout.
  • Understood that VStack creates all child views immediately, whereas LazyVStack generates views only when they become visible on screen.
  • Realized that LazyVStack is more suitable for scrollable, data-driven UIs with many or heavy views because it improves memory efficiency and performance.

๐ŸŒ Web Development Learning

  • React Router v7 Framework Mode is similar to Remix, so my Remix experience will still be useful.
  • root.tsx, routes.ts, and route files work together to render each page.

๐Ÿ” TryHackMe Learning

ContAInment

  • Identified useful indicators from attacker notes and used them to recover encrypted files.
  • Practiced DFIR-style investigation by following clues across logs, archives, and extracted data.
  • Used AI-assisted forensic tools to analyze encoded flag candidates and identify the correct flag.
  • Improved my understanding of how AI systems themselves can become targets in modern cyberattacks.

๐Ÿš€ Next Week

  • Complete the badge algorithm in the SwiftUI tutorial.
  • Continue posting small articles on Dev.to and start creating Web UI designs in Figma.
  • Continue working on the AI Security Learning Path.

๐ŸŒˆ Goals for This Year

๐Ÿ“ฑ iOS (SwiftUI)

  • Build a solid foundation in SwiftUI and create at least one iOS app.

๐ŸŒ Web Development

  • Continue posting learning logs on Dev.to and eventually turn them into a portfolio site using React Router v7.

๐Ÿ” Security (TryHackMe)

  • Continue learning cybersecurity on TryHackMe.

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