> For the complete documentation index, see [llms.txt](https://reidanb.gitbook.io/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://reidanb.gitbook.io/home/welcome.md).

# Welcome

```bash
[reidanb@gitbook ~]$ whoami
reidanb
```

Internal Security Lead at an MSP based in Yorkshire. Focused on identity-first security, Microsoft 365 / Azure, Conditional Access, and reducing trust boundaries in MSP environments. Most of my time is split between security architecture, investigation, automation, and finding where systems, applications, and controls do not behave as expected.

```bash
[reidanb@gitbook ~]$ dpkg -l | grep -E 'identity|m365|azure|detection|automation|netsec|infra'
ii  entra-id          2026.6     amd64     Identity-first security and access control
ii  conditionalaccess 1.0        amd64     Policy design, enforcement, and exceptions
ii  microsoft-graph   2.0        amd64     Microsoft 365 / Entra automation
ii  sentinel-kql      1.0        amd64     Investigation, detection, and log analysis
ii  defender-xdr      1.0        amd64     Endpoint, identity, and cloud security operations
ii  intune-mdm        1.0        amd64     Device compliance and control
ii  vuln-mgmt         1.0        amd64     Vulnerability tracking and remediation workflow
ii  trust-boundaries  1.0        amd64     Network segmentation and least-privilege access
ii  powershell        7.5        amd64     Scripting, reporting, and internal tooling
ii  golang            1.22.2     amd64     Small tools and backend services
ii  terraform         1.8.0      amd64     Infrastructure as Code
ii  wireguard-tools   1.0.2023   amd64     VPN and private network access
```

```bash
[reidanb@gitbook ~]$ cat ~/README.txt
```

This is a personal knowledge base covering InfoSec, systems engineering, and infrastructure.\
It serves as a working journal - documenting lab builds, write-ups, network experiments,\
and things that don’t quite sit right.

```bash
[reidanb@gitbook ~]$ cat ~/social.txt
```

* 🧑‍💻 [GitHub: reidanb](https://github.com/reidanb)
* 🔗 [LinkedIn Profile](https://www.linkedin.com/in/reidan)
* 🔐 PGP Public Key\
  `Fingerprint: FA9F 71F8 394F 4A06 5D96 DF2C FBDB 7DF2 520B 993D`

***

```bash
[reidanb@gitbook ~]$ cat ~/focus.txt
```

**Current Areas of Focus**:

* Identity-first security and Conditional Access design
* Network trust boundaries and segmentation (home lab + real environments)
* Observability and detection (SIEM, logging, "what actually happened")
* Early exploration of OT and signal integrity concepts
* Automation and tooling (Go, scripting, infrastructure)