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Data Defenders

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Defenders of the Information World ™

Data Defenders® is a Managed Cybersecurity Operations Provider headquartered in Chicago, Illinois, serving municipalities, healthcare organizations, nonprofits, SLTT entities, and businesses across the United States since 2005.

  • Min project size
    $100,000+
  • Hourly rate
    $200 - $300 / hr
  • Employees
    10 - 49
  • Locations
    Chicago, IL
  • Year founded
    Founded 2005

Overview by:

Reviewer avatar
Cyrus Walker
Founder, CEO About the Team

1 Locations

  • Chicago , IL

Service Lines
Cybersecurity
90%
IT Managed Services
10%
Select Focus Area
IT Managed Services Focus
Security
80%
Other IT managed services
20%
Industries
Government
35%
Non-profit
30%
Financial services
20%
Education
5%
Legal
5%
Medical
5%
Clients
Midmarket ($10M - $1B)
50%
Enterprise (>$1B)
25%
Small Business (<$10M)
25%

Pricing Snapshot

Min. project size $100,000+
Avg. hourly rate $200 - $300 /hr
Rating for cost 4 /5

Most Common Project Size

Confidential based on 1 review
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000
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Overall Review Rating

4.5

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  • Schedule

    4.0 /5

  • Cost

    4.0 /5

  • Willing to Refer

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See all 1 Reviews

Data Defenders Reviews

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Cybersecurity for Municipal Government

  • Cybersecurity
  • Digital Forensics & Auditing Cybersecurity Expert Testimony Identity & Access Management Threat/Attack Simulations Cybersecurity Consulting Managed SIEM Services Network Security Threat Intelligence Services Vulnerability Management
  • Confidential
  • Jan. 2020 - Dec. 2025
4.5
Quality
4.0
Schedule
4.0
Cost
4.0
Willing to Refer
5.0

"They operate as though the client's security posture is their own responsibility."

Apr 29, 2026
Director, Municipal Government
Leela Karumuri
  • Government
  • Aurora, Illinois
  • 501-1,000 Employees
  • Online Review

Data Defenders provided managed security services for a municipal government. Their work spanned IT and OT environments, managed detection, GRC, and vCISO services.

Showing 1-1 of 1 Reviews

Our Story

Data Defenders was built on a simple belief: organizations doing meaningful work shouldn't have to choose between strong cybersecurity and staying focused on their mission. We partner with nonprofits, municipalities, and growing businesses to deliver resilient cybersecurity operations, not just tools or alerts, but an embedded partner managing the full lifecycle. As a Managed Cybersecurity Operations Provider (MCOP), we align governance, technology, and process so your operations keep running.

Meet the Team

Cyrus Walker

Cyrus WalkerFounder, CEO

Founder & CEO of Data Defenders. 30 years in cybersecurity ops. Trained 5,000+ federal law enforcement professionals under DHS funding. Leads every client engagement personally. Practitioner in OT security, forensics, and election system integrity.

What Sets Us Apart

Operations-First, Not Product-First

We lead with operations, not tools. Every engagement runs across three pillars: Governance, Technical Infrastructure Management, and Process and Procedure. We carry the daily operational weight of your cybersecurity program alongside you.

Proven in High-Stakes Environments

We have secured water treatment facilities, traffic networks, CJIS law enforcement systems, election infrastructure, and healthcare programs. Our clients are public-facing organizations where a breach has real consequences for real people.

Enterprise Security. Accessible Price.

Through the Regional SOC Utility, municipalities, nonprofits, and healthcare organizations get the breadth of a full security operation without the internal staffing, expertise, or overhead required to run one independently.

Quick Facts

21 years in business

Team Breakdown

Security Operations (SOC) (5)
Cybersecurity Advisory (3)
Incident Response and Forensics (2)
Penetration Testing (3) +6 Teams

Tools and Technology

Microsoft Azure
Azure DevOps
Splunk
Azure

Locations (1)

111 West Jackson Boulevard Chicago, IL, United States 60604

2 - 5

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