Security services
Security work, done by people who run networks
Audits, hardening, compliance help, and incident response from the team that has operated production infrastructure since 2014. For D4 customers and everyone else.
What we do
Five services, one team
Security audit
One-time engagement
A structured review of servers, network, and configuration. Prioritized findings, not a scanner dump.
Server hardening
One-time engagement
We lock down access, services, kernels, and firewalls the way we run our own fleet.
Compliance consulting
Project-based · PCI-DSS, HIPAA
Practical help preparing infrastructure for PCI-DSS or HIPAA assessments.
Incident response
Hourly · 24/7
Containment, cleanup, and a plain account of what happened, whenever it happens.
Managed security
Ongoing · 24/7
Patching, log review, and response, handled continuously so you do not have to staff it.
How we work
Four steps, no mystery
Step 01
Assess
We map what you run and where the real risk sits before anything else.
Step 02
Plan
You get a written plan with priorities, effort, and what we need from you.
Step 03
Implement
We do the work on your schedule, with every change documented.
Step 04
Monitor
We stay available after handoff, or stay on if you want eyes on it.
Why D4
Fast response
Incidents go to an engineer, not a ticket tier. No scripted first replies, no waiting for business hours.
An expert team
The people doing this work run D4's own production network. Vetted specialists join when a job calls for them.
Flexible engagement
A one-time audit, a scoped project, or ongoing coverage. Start small and extend it only when it earns its place.
Need the data instead of the people?
D4TI is our threat intelligence platform. Feeds, lookups, and blocklists built from what our sensor network sees.