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Christopher Callahan Email & Phone Number

Chief Information Security Officer at Weichert Companies at Weichert Companies
Location: New York City Metropolitan Area, United States, United States 11 work roles 3 schools
1 work email found @callahanworld.com 1 phone found area 717 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email c****@callahanworld.com
Direct phone (717) ***-****
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Current company
Weichert Companies
Role
Chief Information Security Officer at Weichert Companies
Location
New York City Metropolitan Area, United States, United States
Company size
13629 employees

Who is Christopher Callahan? Overview

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Quick answer

Christopher Callahan is listed as Chief Information Security Officer at Weichert Companies at Weichert Companies, a company with 13629 employees, based in New York City Metropolitan Area, United States, United States. AeroLeads shows a work email signal at callahanworld.com, phone signal with area code 717, and a matched LinkedIn profile for Christopher Callahan.

Christopher Callahan previously worked as Chief Information Security Officer at Weichert Companies and Principal Technologist - vCISO at Cyber Fusion Services. Christopher Callahan holds Computer Programming from The Chubb Institute.

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{first}@callahanworld.com
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Profile bio

About Christopher Callahan

Strategic, award-winning Chief Information Security Officer with deep Cyber Security and risk management experience in protecting businesses, team members, and customers in large, enterprise-wide, complex environments. Trusted advisor to executive team & legal department on best practices to balance risk vs. reward in introducing new business and technology strategies or in handling litigation. Big picture thinker with keen business acumen and a deep knowledge of IT infrastructure & architecture as well as advanced threat protection technologies. Creates value and operational efficiencies with solutions-oriented strategies; streamlined, audit-ready processes; stewardship of high-performing teams held accountable for impactful results; and compliance/alignment with government and industry regulations, including PCI DSS, GDPR, NIST, ISO 27001, NYDFS Part 500, HIPAA, HITECH, and HITRUST. Recognized for establishing a sound governance structure and executing a comprehensive IT Security Program to protect assets, including effective policies, guidelines, internal controls, performance monitoring & measuring, and awareness training. Strong problem-solving, collaborative, and executive communication skills supported by expertise in:Information & Cyber SecurityRisk Assessment | ManagementBreach Detection | Threat ProtectionSecurity Development Life CycleQuality Assurance | ComplianceVendor | Financial ManagementProject Management3rd-Party Risk ManagementPrivacy Office

Listed skills include It Operations, It Risk Management, It Service Management, Itil, and 27 others.

Current workplace

Christopher Callahan's current company

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Weichert Companies
Weichert Companies
Chief Information Security Officer at Weichert Companies
New York, NY, US
Website
weichert.com
Employees
13629
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Company profile
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11 roles · 25 years

Christopher Callahan work experience

A career timeline built from the work history available for this profile.

Chief Information Security Officer

Current
Weichert Companies
  • Built from the ground up a cyber and information security program supporting 12 Weichert companies. Established the foundation for policies, standard processes, CIS system hardening, ITIL, and measurable controls based.
  • Drafted a Business Continuity and Pandemic Plan prior to the COVID-19 outbreak preparing the organization for impact.
  • Guided the organization through change to obtain a SOC2 Type II certification for the Relocation and Corporate Housing companies.
  • Provided NY DFS attestation for the Mortgage and Insurance companies.
  • Supported contract reviews for new client RFPs resulting in 5 new clients with revenue over $7MM.
  • Consolidated vendors in establishing a managed security operations center, resulting in a $60K savings.
Sep 2019 - Present

Principal Technologist - Vciso

Cyber Fusion Services
  • Consult and partner with client organizations to drive strategic information security controls, risk and compliance best practices by understanding client vertical industries, organizational structures, business.
  • Risk Control: Strategic leadership, coordination and advice on the most appropriate security practices and policies, as well as a network-wide review of client’s existing security systems and the strategic plans for.
  • Ensure compliance: Expert guidance on the right information security policies and procedures to meet all relevant industry regulations of the client.
  • Control spending: Focus security budgets on protecting client’s business-critical assets and defending the high-risk areas where a security breach could seriously impact the organization.
  • Complete visibility: Places the client’s security in the context of the latest industry trends and technologies, as well as the threats and vulnerabilities that could negatively impact the organization.
  • Information Security Roadmap: Develop and draft a multi-year, information security program roadmap and executive-level presentation with project, technology, and staffing priorities that is suitable for executive-level.
Oct 2018 - Sep 2019

Director, Global It Risk & Compliance, Cyber Security Operations,

Novartis

Basel, Baselstadt, CH

Responsible for the people, process, budget, and delivery of the following services:Vulnerability Management Services - Operations Qualys Enterprise, AWS EC2 scanning, Azure scanning, assessment of acquisitions before connectivity, TippingPoint IPS integration, Whitelist-Blacklist Management, utilized REST API to integrate network data for input, and.

Feb 2009 - May 2018

Associate Director, It Risk & Compliance – Americas

Novartis

Basel, Baselstadt, CH

Responsible for the people, process, budget, and delivery of the following services:Vulnerability Management Services - Regional vulnerability scanning utilizing Nessus and external vulnerability scanning utilizing QualysIDS Service - Cisco IDS (intrusion detection system) integrated with Symantec Managed Security Services for rapid response Quality.

2001 - 2009 ~8 yrs

Senior Engineer, It Infrastructure

Novartis

Basel, Baselstadt, CH

Jun 1997 - Mar 2001

Senior Systems Programmer

Ricoh Usa, Inc.

Exton, PA, US

Jun 1993 - Jun 1997

President

Automated Business Systems, Inc
Jun 1992 - Jun 1995

Senior System Support Analyst

Cma Software Inc.
Jan 1992 - Jun 1992

Senior Systems Programmer

Carteret Saving Bank
Sep 1988 - Jan 1992

System Analyst

Hilton Hotels Corp.
Sep 1985 - Sep 1988
Team & coworkers

Colleagues at Weichert Companies

Other employees you can reach at weichert.com. View company contacts for 13629 employees →

B" Bonifacio Bonifacio "Bob" Velasquez Colleague at Weichert CompaniesSummit, New Jersey, United States, United States View → EE Ellen Erdman Ellen Erdman Colleague at Weichert CompaniesSuffern, New York, United States, United States View → MZ Megan Zottoli Megan Zottoli Colleague at Weichert CompaniesFalmouth, Massachusetts, United States, United States View → FA Forrest Anderson Forrest Anderson Colleague at Weichert CompaniesLinden, New Jersey, United States, United States View → MV Maria Vega Maria Vega Colleague at Weichert CompaniesNew Windsor, New York, United States, United States View → DP Dorothy Pellegrino Dorothy Pellegrino Colleague at Weichert CompaniesHaddonfield, New Jersey, United States, United States View → MI Marija Ilic Diaz Marija Ilic Diaz Colleague at Weichert CompaniesOrlando, Florida, United States, United States View → LC Leonard Cipkins Leonard Cipkins Colleague at Weichert CompaniesMountain Lakes, New Jersey, United States, United States View → LH Lauren Herberghs Lauren Herberghs Colleague at Weichert CompaniesMclean, Virginia, United States, United States View → DE Dianna Ewton Dianna Ewton Colleague at Weichert CompaniesNew York City Metropolitan Area, United States View →
3 education records

Christopher Callahan education

Computer Programming

The Chubb Institute

A.A.S. Business Computing

County College Of Morris

Education record

Parsippany Hills High School
FAQ

Frequently asked questions about Christopher Callahan

Quick answers generated from the profile data available on this page.

What company does Christopher Callahan work for?

Christopher Callahan works for Weichert Companies.

What is Christopher Callahan's role at Weichert Companies?

Christopher Callahan is listed as Chief Information Security Officer at Weichert Companies at Weichert Companies.

What is Christopher Callahan's email address?

AeroLeads has found 1 work email signal at @callahanworld.com for Christopher Callahan at Weichert Companies.

What is Christopher Callahan's phone number?

AeroLeads has found 1 phone signal(s) with area code 717 for Christopher Callahan at Weichert Companies.

Where is Christopher Callahan based?

Christopher Callahan is based in New York City Metropolitan Area, United States, United States while working with Weichert Companies.

What companies has Christopher Callahan worked for?

Christopher Callahan has worked for Weichert Companies, Cyber Fusion Services, Novartis, Ricoh Usa, Inc., and Automated Business Systems, Inc.

Who are Christopher Callahan's colleagues at Weichert Companies?

Christopher Callahan's colleagues at Weichert Companies include Bonifacio "Bob" Velasquez, Ellen Erdman, Megan Zottoli, Forrest Anderson, and Maria Vega.

How can I contact Christopher Callahan?

You can use AeroLeads to view verified contact signals for Christopher Callahan at Weichert Companies, including work email, phone, and LinkedIn data when available.

What schools did Christopher Callahan attend?

Christopher Callahan holds Computer Programming from The Chubb Institute.

What skills is Christopher Callahan known for?

Christopher Callahan is listed with skills including It Operations, It Risk Management, It Service Management, Itil, Security, Vendor Management, Pmp, and It Management.

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