John Sherman Email & Phone Number
@markel.com
4 phones found area 804 and 800
LinkedIn matched
Who is John Sherman? Overview
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John Sherman is listed as Senior Director Cybersecurity at Markel, based in Fredericksburg, Virginia, United States. AeroLeads shows a work email signal at markel.com, phone signal with area code 804, 800, and a matched LinkedIn profile for John Sherman.
John Sherman previously worked as Director Cyber Technology Engineering at Markel and Manager - Security Engineering at Markel. John Sherman holds Information Technology Security from Western Governors University.
Email format at Markel
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AeroLeads found 1 current-domain work email signal for John Sherman. Compare company email patterns before reaching out.
About John Sherman
I am a dedicated Security Specialist with over 10 years of experience. I have a passion for solving complex problems and possess the ability to quickly learn and master new technologies.
Listed skills include Security, Windows 7, Active Directory, Technical Support, and 49 others.
John Sherman's current company
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John Sherman work experience
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Director Cyber Technology Engineering
Manager - Security Engineering
- Manage a global team of security engineers that support the security suite of tools for the enterprise which includes EDR, SIEM, DLP, PAM, Vulnerability management, Cloud security, Email security, Web Gateway, Identity Protection, Firewall security, and other technical needs for the security department.- Hire exceptional individuals, establish developmental plans, coach to the needs of the team, perform reviews, and support their projects and initiatives by removing blockers and helping them establish successful paths.- Establish and develop strong vendor relationships, and partnerships with key business and technical resources.- Develop and maintain program level roadmaps for strategic advancement of the security department and ensuring compliance with enterprise regulations.- Drive team growth and program maturity through operational improvements, automation, and targeted development opportunities.- Lead projects for security technology integrations while developing and enabling the team to independently support security projects.- Establish effective process and drive automation to reduce operational time, reduce organization risk, and increase productivity.- Establish and utilize metrics that ensure successful administration and operational response.- Provide architectural oversight, direction, and effective implementation for global security solutions.- Evaluate enterprise architecture, systems, networks, and data to determine effective security controls and solutions.- Interpret and give recommendations on controls to meet compliance and regulatory requirements for NY State/SOX/GDPR/NIST/etc.- Assist in development of security policies, standards, and procedures.- Serve as a high-level technical security resource on enterprise network, system, and application implementation projects.- Effectively communicate complex security problems and recommended solutions to an audience with varying levels of security and technical knowledge.
Senior Security Engineer
- Provide architectural oversight, direction, and effective implementation for global security solutions.- Serve as a subject matter expert (SME) for a variety of security tools to include design, implementation, operation and maintenance of security tools and solutions.- Security SME for ongoing support of Azure and O365 solutions to include; Azure Sentinel, Azure Advanced Threat Protection, Azure Security Center, Cloud Application Security, Security & Compliance, and O365 security.- Evaluate enterprise architecture, systems, networks, and data to determine effective security controls and solutions.- Interpret and give recommendations on controls to meet compliance and regulatory requirements for NY State/PCI/GDPR/NIST/etc.- Assist in development of security policies, standards, and procedures.- Evaluate and recommend new and emerging security products and technologies.- Understand current and emerging security threats and design security architecture to mitigate threats where possible.- Serve as a high-level technical security resource on enterprise network, system, and application implementation projects.- Serve as a high-level technical security resource for other departments within the Security division.- Effectively communicate complex security problems and recommended solutions to an audience with varying levels of security and technical knowledge.- Develop process and documentation to support ongoing security systems operations, maintenance and problem resolution.
Senior Information Security Analyst
- Security project lead for proof of concept and security technology implementations.- Security SME for enterprise next-gen firewalls to include; policy and rule reviews, policy and hardening recommendations, and URL filtering management.- Lead for patch rating and vulnerability management.- Security SME responsible for the management of the enterprise EDR solution including; client and policy management, and user training.- Security project lead for proof of concept and implementation of a web proxy with SSL inspection.- Effectively integrate and administer security tools such as Azure security solutions, EDR, UBA, vulnerability scanners, forensics and others.- Create documentation, process flows, policies, and standards to mature the Information Security program.- Create processes and playbooks utilized by the Security Operations Center (SOC) and participate in IR as needed.- Stay up to date on the latest threats and exploits, and effectively use intelligence to evaluate their effect on the business.- Respond to alerts, user tickets, emails, and calls in a timely and professional manner while working effectively as a team or independently with little supervision.- Participate in security assessments as required to identify gaps and vulnerabilities.- Problem solving and remediation of complex problems.
Senior Information Security Analyst
- Manage the enterprise intrusion detection system to analyze traffic for network security incidents- Administer the company spam firewall and web filter appliances- Security project lead for proof of concept and implementation of a security information event management system(SIEM), denial of service(DoS) mitigation solution, mobile device management(MDM), and Azure cloud migration- Manage the enterprise SIEM including; create and modify rules, queries and correlations to alert for various high threat network events- Manage a cloud hosted DoS mitigation solution and web application firewall (WAF) - Create documentation, policies, and standards to mature the Information Security program- Create incident response(IR) documentation, create and present IR training, and participate in IR as needed- Respond to alerts, user tickets, emails, and calls in a timely and professional manner while working effectively as a team or independently with little supervision- Problem solving and remediation of complex problems
It Security Analyst
- Manage the University anti-virus solution installed on 2100 endpoints. Duties include creating policies & deployment packages, monitoring virus activity, and creating reports- Implemented a data loss prevention solution to prevent the loss of personally identifiable information. Manage scans for SharePoint, Exchange, file servers, endpoints, and public facing web server- Utilize an enterprise vulnerability scanner to provide monthly reports for presentation to administration that identify potential threats and vulnerabilities and make recommendations on patch and vulnerability management- Implemented a security information and event management server to correlate events from various servers and firewalls to proactively monitor the security and information technology infrastructure. Create and modify rules, queries and correlations to alert for various high threat network events- Installed and modified a Linux based audit and incident tracking system for the Information Security Department that is utilized for metrics for IT Security strategic planning- Implemented an intrusion detection system to analyze traffic for network security incidents- Increase user awareness by maintaining the IT Security website and Twitter account , as well as creating Security Awareness presentation used for new employees and annual security awareness training- Assist the ISO with risk assessments and audits on existing and proposed systems, as well as, documenting and providing recommendations- Develop policies, procedures, and standards for the enterprise environment
Colleagues at Markel
Other employees you can reach at markel.com. View company contacts →
Kelly Costello
Colleague at MarkelGlasgow, Scotland, United Kingdom
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DM
Dave Mckechnie
Colleague at MarkelLeeds, England, United Kingdom
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OB
Oliver Beever Cert Cii
Colleague at MarkelBirmingham, England, United Kingdom
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LM
Leona Mckenzie
Colleague at MarkelGreater Nottingham, United Kingdom
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CB
Chavala Banks
Colleague at MarkelCroydon, England, United Kingdom
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CH
Charlotte Harrison
Colleague at MarkelUnited Kingdom
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TW
Tristan Wood
Colleague at MarkelLeeds, England, United Kingdom
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LH
Louise Hitchman
Colleague at MarkelBirmingham, England, United Kingdom
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JE
Julie Eyles
Colleague at MarkelLondon, England, United Kingdom
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CW
Charlotte Webster
Colleague at MarkelKippax, England, United Kingdom
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John Sherman education
Information Technology Security
Computer Science
Frequently asked questions about John Sherman
Quick answers generated from the profile data available on this page.
What company does John Sherman work for?
John Sherman works for Markel.
What is John Sherman's role at Markel?
John Sherman is listed as Senior Director Cybersecurity at Markel.
What is John Sherman's email address?
AeroLeads has found 1 work email signal at @markel.com for John Sherman at Markel.
What is John Sherman's phone number?
AeroLeads has found 4 phone signal(s) with area code 804, 800 for John Sherman at Markel.
Where is John Sherman based?
John Sherman is based in Fredericksburg, Virginia, United States while working with Markel.
What companies has John Sherman worked for?
John Sherman has worked for Markel, Browngreer Plc, and University Of Mary Washington.
Who are John Sherman's colleagues at Markel?
John Sherman's colleagues at Markel include Kelly Costello, Dave Mckechnie, Oliver Beever Cert Cii, Leona Mckenzie, and Chavala Banks.
How can I contact John Sherman?
You can use AeroLeads to view verified contact signals for John Sherman at Markel, including work email, phone, and LinkedIn data when available.
What schools did John Sherman attend?
John Sherman holds Information Technology Security from Western Governors University.
What skills is John Sherman known for?
John Sherman is listed with skills including Security, Windows 7, Active Directory, Technical Support, Networking, Troubleshooting, Operating Systems, and Windows Server.
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