---
title: "Discussion on \"Day - 3 | Advent of Cyber 2025 | TryHackMe\" | Hashnode"
description: "Discussion on \"Day - 3 | Advent of Cyber 2025 | TryHackMe\". Learning Objectives\n\nIngest and interpret custom log data in Splunk\n\nCreate and apply custom field extractions\n\nUse Search Processing Language (SPL) to filter and refine search results\n\nConduct an investigation within Splunk to uncover key insights\n\n..."
url: "https://hashnode.com/posts/day-3-advent-of-cyber-2025-tryhackme/69318ff0c2e1c71f7f746f3c"
---

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Discussion

# [Day - 3 | Advent of Cyber 2025 | TryHackMe](https://starting-out-in-cybersec.hashnode.dev/day-3-advent-of-cyber-2025-tryhackme?utm_source=hashnode&utm_medium=feed)

Learning Objectives Ingest and interpret custom log data in Splunk Create and apply custom field extractions Use Search Processing Language (SPL) to filter and refine search results Conduct an investigation within Splunk to uncover key insights ...

Dec 4, 2025 · 4 min read · starting-out-in-cybersec.hashnode.dev  
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-   [#tryhackme](https://hashnode.com/tag/tryhackme)
-   [#tryhackme-walkthrough](https://hashnode.com/tag/tryhackme-walkthrough)
-   [#tryhackmewalkthrough](https://hashnode.com/tag/tryhackmewalkthrough)
-   [#tryhackme-cybersecurity-infosec-learningpath-beginnerfriendly-ctf-capture-the-flag-relevant-to-hacking-practice-linux-networking-cybersecuritylearning-techjourney-selftaught](https://hashnode.com/tag/tryhackme-cybersecurity-infosec-learningpath-beginnerfriendly-ctf-capture-the-flag-relevant-to-hacking-practice-linux-networking-cybersecuritylearning-techjourney-selftaught)
-   [#ctf](https://hashnode.com/tag/ctf)
-   [#ctf-writeup](https://hashnode.com/tag/ctf-writeup)
-   [#capturetheflag](https://hashnode.com/tag/capturetheflag)
-   [#adventofcyber2025](https://hashnode.com/tag/adventofcyber2025)
-   [#hashnode](https://hashnode.com/tag/hashnode)
-   [#cybersecurity](https://hashnode.com/tag/cybersecurity)
-   [#cybersec](https://hashnode.com/tag/cybersec)
-   [#splunk](https://hashnode.com/tag/splunk)
-   [#splunk-practice](https://hashnode.com/tag/splunk-practice)

## Written by

[Vivek Redhu](https://hashnode.com/@Vee-Sec)

@Vee-Sec · Dublin, IE

  
[View profile](https://hashnode.com/@Vee-Sec)

What can be broken can be understood. What can be understood can be secured.

Hi, I’m Vivek — also known as Vee-Sec. Currently pursuing a Master’s in Cybersecurity in Dublin, with graduation expected in Jan 2027. I document my CTF writeups and findings here.

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