Private Tech Guardianship

You're not hiring a company.
You're hiring the person who watches.

Sentinel is operated personally by Amir Saber Sharifi.

02

Credentials

Where I've worked and what I've built.

Current Role
CTO, Designity

Creative operations SaaS platform. Owning engineering, infrastructure security, and product architecture.

Former Engineering
Blockchain Infrastructure

Crypto custody, wallet architecture, and irreversible-transaction environments where threat modeling is survival.

Founder
Saberistic

Strategic cybersecurity consulting. Threat modeling, security architecture, and posture assessments for HNW individuals and family offices.

Hands-on With
Operational Security

Password infrastructure, family device hardening, smart home network segmentation, cold storage, and digital estate planning.

03

Why I built Sentinel

Wealthy families protect their money, homes, and people — and leave their digital life to whoever set up the router. That gap is what Sentinel closes.

I've spent years building security systems for companies and individuals who can't afford to get it wrong. The common thread: the people who needed protection most had the least access to it.

Sentinel is the service I kept wishing existed. Personal accountability from someone who knows your name, your household, and your exposure — not a platform, not a help desk.

04

What this means for you

I
Every account reviewed by me personally

No ticket queue. No anonymous analyst. Your household roster, devices, and credentials never leave the systems I control — and every review is done by the same person every time.

II
Your data stays under my control

Credentials, device inventory, breach exposure data — none of it leaves infrastructure I haven't vetted personally. This is not negotiable and it's not a cost-cutting decision.

III
You text me when something breaks

Not a help desk. Not an automated ticket. A direct line to someone who knows your setup and can act immediately — at 11pm on a Sunday if that's when it happens.

IV
Membership capped at 25 households

This is what allows the above to be true. I don't take more clients than I can personally handle. When the cohort is full, it's full.

Start with a 10-minute
risk assessment

Tell me about your household and I'll give you a written analysis of where you stand — no obligation, no sales pitch.

Request a security assessment How we protect your privacy →