--- title: Team Rocket Came Back Again, Phase 2 Ended, and I... description: A personal learning journal entry covering three topics encountered in a single day: starting Linked Lists on LeetCode as part of DSA preparation, discovering... canonical: https://daily.dev/posts/team-rocket-came-back-again-phase-2-ended-and-i-started-to-learn-new-things-in-tech-uinvusfhe twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Team Rocket Came Back Again, Phase 2 Ended, and I started to learn new things in tech | daily.dev og:description: A personal learning journal entry covering three topics encountered in a single day: starting Linked Lists on LeetCode as part of DSA preparation, discovering... og:url: https://daily.dev/posts/team-rocket-came-back-again-phase-2-ended-and-i-started-to-learn-new-things-in-tech-uinvusfhe og:image: https://api.daily.dev/og/posts/uinVusfHe.png og:image:alt: Team Rocket Came Back Again, Phase 2 Ended, and I started to learn new things in tech og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Team Rocket Came Back Again, Phase 2 Ended, and I started to learn new things in tech **[Medium](https://daily.dev/sources/medium_js)** · 5 min read · 1 upvotes · 0 comments ## Summary A personal learning journal entry covering three topics encountered in a single day: starting Linked Lists on LeetCode as part of DSA preparation, discovering the Row Hammer hardware memory attack as an introduction to below-application-layer security, and completing Phase 2 of a personal project called SentiOps — a security alerts and observability platform. The post draws a thematic connection between all three: the importance of understanding connections in data structures, systems, and attack surfaces. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How I Mastered Data Structures and Algorithms for ML \(In 6 Weeks\)](https://daily.dev/posts/how-i-mastered-data-structures-and-algorithms-for-ml-in-6-weeks--2npn4ew3g) · Towards Data Science · 12 upvotes · 0 comments - [Lear Data Structures and Algorithms Visually](https://daily.dev/posts/lear-data-structures-and-algorithms-visually-uk37akbzk) · freeCodeCamp · 1 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#data-structures](https://daily.dev/tags/data-structures) [View this post on daily.dev](https://daily.dev/posts/team-rocket-came-back-again-phase-2-ended-and-i-started-to-learn-new-things-in-tech-uinvusfhe) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Team Rocket Came Back Again, Phase 2 Ended, and I started to learn new things in tech","url":"https://daily.dev/posts/team-rocket-came-back-again-phase-2-ended-and-i-started-to-learn-new-things-in-tech-uinvusfhe","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/team-rocket-came-back-again-phase-2-ended-and-i-started-to-learn-new-things-in-tech-uinvusfhe"},"datePublished":"2026-07-22T19:31:29.376Z","dateModified":"2026-07-22T19:32:00.024Z","description":"A personal learning journal entry covering three topics encountered in a single day: starting Linked Lists on LeetCode as part of DSA preparation, discovering...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/57bae99c2d50f24dac120a36cf86fe0e?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/57bae99c2d50f24dac120a36cf86fe0e?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Medium","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Medium","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/medium","url":"https://daily.dev/sources/medium_js"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/team-rocket-came-back-again-phase-2-ended-and-i-started-to-learn-new-things-in-tech-uinvusfhe","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"security,data-structures","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Medium","item":"https://daily.dev/sources/medium_js"},{"@type":"ListItem","position":3,"name":"Team Rocket Came Back Again, Phase 2 Ended, and I started to learn new things in tech"}]} ```