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Managed IT · Cybersecurity · Software · Los Angeles

Secure the business. Build what runs it.

ThinkOpen is the technology team behind trust administrators, builders, restaurants and professional firms across Southern California. We run your IT, defend it the way an attacker would test it, and write the software your business runs on.

15 minutes with an engineer, not a salesperson.

Our clients

Trusted by businesses across Southern California.

See every client story
TrusteeCorpsTrust administration
Ground Up RenovationsConstruction and property
Steele LLPProfessional services
Insource LogicFinancial software
Oku NoriRestaurants
Don OrangeRestaurants
Industrial and agriculture
What we do

One team for the whole stack.

Most small businesses juggle an IT provider, a security vendor and a developer who never talk to each other. We are all three, held to one standard, with one number to call.

Defend

Security that assumes breach.

We map your real attack surface and rank what we find by how exploitable it is and what it would cost you, then fix it and prove it stays fixed.

  • Security audits and pentest coordination
  • Endpoint, identity and Microsoft 365 hardening
  • Evidence for lenders and cyber insurers
Security services
Run

Managed IT that sees it first.

Helpdesk, on-site support and monitoring from engineers who know your office by name. Most problems are caught before anyone has to call.

  • Helpdesk and on-site support
  • Monitoring, patching and drift detection
  • Backup, continuity and disaster recovery
Managed IT
Build

Software that earns daily use.

When the right tool does not exist, we write it. Client portals, internal apps and AI that does the work your team should not do twice.

  • Custom apps and client portals
  • AI copilots and workflow automation
  • ERP, CRM and Microsoft 365 integration
Software and AI
Software we built

We built the tools we couldn't buy.

Every product here started as a problem we hit running IT for real businesses. We wrote the tool, put it to work on our own clients, and kept improving it every week.

Early access · arqos.io

Every server. Every switch. Watched.

Arqos watches the infrastructure a small business runs on: servers, switches, firewalls, printers, UPS units and hypervisors. It stays quiet until something needs a person, then tells you what broke, why, and what is using it. It only observes. It never pushes a change to a client machine.

  • Down detection in about two minutes, resolved automatically when it recovers
  • One inbox, split into what needs you and what is already known
  • Names the app behind a full disk or a busy CPU
  • Matches installed software against known-exploited vulnerabilities
  • Plain-English health for switches, printers, UPS and ESXi hosts
  • Uptime and evidence reports an insurer can read
Web · iPhone · Mac · agents for Windows, macOS and Linux

Why we built it

Monitoring tools buried us in charts and asked for remote-control rights on every server. We wanted one that watches, says only what matters, and can't be turned against the client it protects.

Instead of

PRTGSensor-based and usually self-hosted
LogicMonitorEnterprise observability with scriptable collectors
AuvikFocused on network discovery and mapping
NinjaOneRemote management bundled with monitoring

Where Arqos differs: read-only by design, and exception-first. It tells you what needs you, not another dashboard to watch.

How it starts

No pitch deck. A conversation, then evidence.

  1. 1

    A 15-minute call

    Tell us what is keeping you up at night. We will tell you honestly whether we are the right fit.

  2. 2

    An evidence-based audit

    We look at your environment the way an attacker would and rank every finding by business impact.

  3. 3

    A roadmap you own

    A prioritized plan with real costs. Hand it to us or to anyone else. It is yours either way.

Talk to us

Talk to an engineer this week.

Fifteen minutes, no slides. You will leave with at least one thing worth fixing, whether or not we work together.

Exposure Snapshot

See what an attacker sees.

Enter your domain. We will grade your email authentication, TLS and public DNS, and send you the full report.

Passive, public checks only. Nothing is scanned or touched.