For lean IT teams
Senior security backup —
without a senior security hire.
You're the IT manager or sysadmin at a 50–1,000 person organization. There's no security department — there's you. ThreeShield is the CISSP/CISA-certified bench behind you: Tier 3 escalations, audit season, incidents, and someone credible to call when something's weird. Since 2006.
What we take off your plate
The work that shouldn't land on one person
Tier 3 security escalations
The tickets you can't close alone: strange auth patterns, suspicious mail rules, EDR alerts nobody can interpret. Escalate to us and get an answer from someone who's seen it before.
Audit & insurance season
Auditor questionnaires, cyber insurance renewals, customer security reviews. We answer them with you — using the same methodology we've applied at Fortune 50 companies and government agencies.
Incident support
When something's actively wrong, you get a senior responder — containment, investigation, and a clear write-up for management and insurers. Call (403) 538-5053.
M365 & Google hardening
Conditional access, mail security, OAuth app review, tenant configuration. We harden the platforms attackers actually target, and leave you documentation that survives staff turnover.
Someone to call when it's weird
Not everything fits a ticket category. Sometimes you just need a second senior opinion before you act — or before you tell your boss. That's exactly what we're for.
Real audits when you need them
CISA-led reviews that typically surface 200+ findings where automated scans find a handful — prioritized with you, not dumped on you.
Ask about an audit →Shared visibility
Lavawall® means we see what you see.
We built Lavawall® ourselves: patching for 7,500+ applications, Microsoft 365 and Google Workspace breach detection, file monitoring, and compliance evidence. When it runs in your environment, an escalation starts with context instead of a screen-share — and audit evidence collects itself all year.
When things go wrong
Guides for the bad days
Written for the moments that actually happen to lean IT teams — read them before you need them, or mid-incident with us on the phone.
Moment guide
Someone clicked a phishing link
What to do in the first hour, what evidence to preserve, and when it's contained versus when it isn't.
Phishing click response →Moment guide
An M365 account is compromised
Session revocation, mail-rule cleanup, OAuth app review, and how attackers persist after the password reset.
M365 compromise response →Moment guide
Cyber insurance renewal landed
How to answer the questionnaire honestly without overpaying — clients typically see 10–20% premium savings when controls are documented properly.
Insurance renewal guide →How engagement works
Start small. Stay because it works.
No retainer required. No annual contract. Most IT teams start with one concrete problem and keep our number afterwards.
"I have worked with ThreeShield at two different companies... Chris is attentive and clearly an expert."
1. Start with an incident or assessment
Bring us the thing that's on fire, or the audit that's due. We prove ourselves on real work first.
2. Get shared visibility
If it makes sense, Lavawall® connects to endpoints, M365/Google, and your domains — so future escalations start with context.
3. Escalate when you need to
Month-to-month, no retainer. You keep running IT; we're the senior security bench behind you.
4. Grow only if you want to
Deep audits, compliance programs, or ongoing augmentation — your call, at your pace.
Common questions
Before you call
- Do you replace the tools we already run?
- No. We complement your existing RMM, EDR, and backup stack. Lavawall® adds patching coverage, M365/Google breach detection, and compliance evidence alongside what you have — and our people plug into your process, not the other way around.
- Do we need Lavawall® to work with you?
- No. Lavawall® gives us shared visibility into your environment, which makes escalations faster and audits cheaper — but plenty of engagements start with just an incident, an audit, or a hardening project.
- What's the minimum commitment?
- None. Start with a single incident or assessment. Ongoing work is month-to-month with no retainer required — we keep the relationship by being useful, not by locking you in.
Keep running IT. Add a senior security bench.
Tell us what's on your plate right now — an incident, an audit, a renewal, or just something weird. A senior person reads every inquiry.
No retainer. No lock-in. Same or next business day response.