Security careers reward the one-word answer to "what's your lane?" — and I never had one. Then I lined up the things I actually built, from a 51-page VMware lab guide to an agentic-AI IAM tool, and found the lane was never a subject. It's a method.
[donny@scyber ~]$ whoami
Donny Schreiber
I'm a cybersecurity consultant at Amazon Web Services (AWS). Over the last ~4.5 years, I've helped some of AWS's highest-profile customers secure over $4B of cloud infrastructure — no matter the industry: healthcare, government, telecom, aerospace & defense, financial-services, education-tech. I love learning about and helping solve complex problems for ... anyone — a Fortune 500, a friend, a local small business. I can't 'do it all'; nor do I want to. But if someone needs help, I'll show up, and I won't give up. Unless I'm told to... twice.
[donny@scyber ~]$ ls ./after-the-day-job
- drums/ From 2015 to 2022 I played drums for Kroenke Sports & Entertainment at night, after my Cybersecurity day-job. In-game for the Avalanche (NHL), Nuggets (NBA), etc. the drummer résumé →
- hockey/ Those days are behind me, but my passion for hockey and the Avs isn't. These days I build fun projects instead, like a 26-27 Avs stats page that auto-refreshes every night. 26-27 Avs stats →
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Multi-Region IPAM on AWS
AWS published my multi-Region IPAM architecture as Prescriptive Guidance, and I open-sourced the IPAM Terraform code (67 pools, 874 resources) on aws-samples.
the pattern → -
Shift-left DevSecOps
I rebuilt one customer's failing CI security scans into a suite of 15+ scanners that only scan what changed.
how → -
GenAI platform security
I wrote the threat model for a broker-dealer's Amazon Bedrock GenAI platform: 127 threats across 15 assets.
related writing →
Latest writing
All posts →How I rebuilt my home network with the discipline I'd apply to production — Infrastructure-as-Code, zero-trust VLAN segmentation, per-client encrypted DNS — and where consumer hardware hits its limits.
I use these tools every day, and I'm also a security professional. A field report on what AI-assisted coding gets wrong — missing authentication, agents with too much access, secrets in the wrong place — from my own code and the research.
Contact
Email and LinkedIn are the easiest ways to reach me. There's no contact form.
- linkedin.com/in/donaldschreiber
- Code
- aws-samples/sample-amazon-vpc-ipam-terraform
- Location
- Colorado