CrossRealms International is an employee-owned, security-first cybersecurity and technology company headquartered in Chicago. For over two decades, we have helped organizations build, operate, and secure the technology environments their businesses depend on.
Our expertise spans cybersecurity, modern security operations, threat intelligence, cloud, infrastructure, networking, and security engineering, with teams across North America, Europe, the Middle East and North Africa (MENA), and India.
At the center of our capabilities is the Modern Security Operations Center (MSOC), combining 24x7 experienced security analysts, continuous monitoring, automation, AI-assisted analysis, managed detection and response, and security investigation.
Automation can monitor systems, correlate events, identify patterns, and process enormous amounts of data — but monitoring is not the same as understanding. CrossRealms combines technology with experienced analysts who investigate ambiguity, apply organizational context, challenge assumptions, and determine what security events actually matter.
This operating model brings together technology, intelligence, people, and engineering, rather than treating cybersecurity as a collection of disconnected products. Capabilities include Splunk managed services, Sophos MDR, endpoint and network security, cloud security, zero trust architecture, and managed IT services, with support for HIPAA, SOC 2, and ISO 27001 compliance. CrossRealms is also a Microsoft Solutions Partner for Data & AI, Infrastructure, and Security.
We work with organizations in financial services, healthcare, professional services, regulated industries, and complex distributed environments that have outgrown point solutions and need a more mature approach to security and technology operations.
CrossRealms helps organizations make better security decisions — not just generate more alerts.
CrossRealms International is noted for delivering projects on time and within budget, providing excellent value for cost. Clients appreciated their flexibility, responsiveness, and effective communication, contributing to improved performance and long-term cost savings.
"They were remarkably responsive to our concerns, treating every question as a priority and following through quickly."
Nov 6, 2026
CTO, Lake Forest Schools
Jordan Salus
Verified
Education
Lake Forest, Illinois
Online Review
Verified
CrossRealms International replaced a legacy Cisco UCM with a high-availability Linux OS 3CX phone system for two school districts. The team deployed 600+ handsets and connected them to PoE switches.
CrossRealms International delivered an outstanding experience from start to finish. The team demonstrated exceptional project management by delivering every milestone on time and within budget. They were flexible, responsive, and available, adapting to the client's specific needs and schedule.
The client submitted this review online.
BACKGROUND
Introduce your business and what you do there.
Lake Forest Schools (Lake Forest CHSD 115 and Lake Forest SD 67) were seeking a new VoIP system to replace their legacy Cisco UCM.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with SP? Needed to replace Cisco UCM with a more cost effective and feature rich phone system.
SOLUTION
What was the scope of their involvement?
Linux OS 3CX Phone Systems will be installed in a fully redundant High Availability (HA) architecture. Two on-premises (physical/virtual) servers handle active call processing at Lake Forest High School and Deer Path Middle School locations ultimately serving six buildings and over 3000 Students.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
*Deploy 600+ handsets and connect to PoE switches (Lake Forest I.T. Dept.) *Verify VLAN tagging, QoS, and audio performance *Conduct final trunking (Voxteleys – primary SIP/Flowroute – backup SIP) *Validate call routing, voicemail, softphone, and SMS functionality
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Working with CrossRealms International on our VoIP rollout was an outstanding experience from start to finish. Their project management was exceptional. Every milestone was delivered on time and on budget, and we always knew exactly where things stood. Communication was consistently clear, proactive, and responsive, and whenever a question or need came up, they addressed it quickly and thoughtfully.
What truly set CrossRealms apart was their genuine partnership. They took the time to understand our districts’ needs and went above and beyond at every stage to ensure our rollout was a success. Projects like this can be complex and disruptive, but CrossRealms made the process smooth and stress-free. We would recommend them without hesitation and look forward to working with them again.
What did you find most impressive or unique about this company?
What impressed us most about CrossRealms was their flexibility. Rather than fitting us into a one-size-fits-all approach, they adapted to our districts’ specific needs and schedule at every turn. They were remarkably responsive to our concerns, treating every question as a priority and following through quickly. Just as important, they were always available.
Whether it was a planned check-in or an unexpected issue, we never had to wonder whether we could reach them. That combination of flexibility, responsiveness, and availability is rare, and it made all the difference in our experience.
Are there any areas for improvement or something CrossRealms International could have done differently?
None, it was a fantastic experiance from start to finish.
RATINGS
5.0
"A fantastic experiance."
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
IT Consulting & SI for Manufacturing Company
Other IT Consulting and SI
$50,000 to $199,999
Mar. - Aug. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"The team communicated effectively and quickly and worked well with others."
Oct 23, 2026
IT Systems-Network Admin, Manufacturing Company
Anonymous
Verified
Manufacturing
Bensenville, Illinois
201-500 Employees
Online Review
Verified
CrossRealms International upgraded a manufacturing company's network infrastructure. The team replaced core switches, servers, and storage. They also configured Windows and Hyper-V on the client's equipment.
CrossRealms International's work improved the client's performance and cost savings for long-term maintenance. The team met deadlines, communicated effectively, and quickly addressed any issues. Overall, the client was impressed with the service provider's work.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the IT Systems-Network Admin of a manufacturing company
Describe what your company does in a single sentence.
Ours is the industry leading manufacturer of environmentally sensitive safety products.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire CrossRealms International to accomplish?
Why did you select CrossRealms International over others?
Other
How many teammates from CrossRealms International were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Rack and stacked all equipment, configured windows and Hyper-v on equipment as well as testing. Decommissioned old servers.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Improved performance and cost savings for long term maintenance.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The team met deadlines, communicated effectively and quickly addressed any issues.
What was your primary form of communication with CrossRealms International?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
The team communicated effectively and quickly and worked well with others.
Are there any areas for improvement or something CrossRealms International could have done differently?
No, everything was excellent
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
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2 Reviews
Verified means Clutch independently confirmed CrossRealms International is a legally registered business, financially sound (Creditsafe: Low Risk), and backed by 2 verified client reviews averaging 5.0 stars.
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