Celle Rolon

• Spearheaded and executed the implementation of DMARC protection for the largest county in the United States, ensuring email authentication and security across all departments
• Served as the sole subject matter expert, educating and collaborating with C-level executives, external vendors, IT teams and end-users to align on project goals and deliverables
• Developed and delivered detailed PowerPoint presentations and conducted regular progress meetings to communicate complex concepts like DMARC, DKIM, and SPF to diverse stakeholders
• Coordinated the retrieval and deployment of DKIM records, ensuring accurate DNS configuration to authenticate third-party email services and enhance email security
• Successfully led cross-functional teams, managed timelines, and mitigated risks, resulting in the seamless deployment of a countywide email security initiative
• Planned, directed and implemented the County's advanced phishing implementation
• Technical consultant and trainer to team members, internal customers and external partners on email delivery topics and issues
• Manage on-premise appliances and cloud email security system in a complex multi-gateway environment with over 110,000 users, and internal and external SMTP relays
• Key contact for email-related security incidents, collaborating with the incident management team to implement appropriate mitigation and identify root cause
• Proactively analyze and optimize email flow to identify and resolve delivery or configuration issues, ensuring timely and secure messasge delivery across the County
• Identified and resolved critical mail flow disruptions for three of LA County's highest-volume external email senders and internal Linux teams
• Audited, isolated and facilitated configuration changes to Microsoft Defender in response to email scoring that negatively impacted email delivery
• Develop and maintain documentation for email security protocols and procedures
• Primary technical support contact for InfoSec IQ phishing simulation software, developing workarounds for Information Security Officers

• Developed solutions to protect company data from internal and external threats for national critical infrastructure
• Remained current on latest threat vectors; analyzed risk level and collaborated with team to enact measures, if needed
• Solely created and managed rules and policies for over 10,000 workstations in email security, web security, and remote access
• Increased social engineering awareness by introducing, customizing and measuring email phishing simulations; decreased company click rate from 32% to 12% in 6 months
• Solely built new cloud-based enterprise email and web replacement systems and filtering rules for 7,000+ users in parallel to existing on-premise systems, and conducted seamless migrations with zero issues
• Created, planned and delivered quarterly cyber security best practices training sessions, leading to a 47% increase in security awareness
• Introduced remote access soft tokens and mobile device OTP authentication as a resolution to an issue that prevented 300 special division end users from achieving consistent network connectivity
• Investigated security incidents; collaborated with cyber team and other IT teams to investigate, isolate and mitigate threats
• Planned, installed and configured alerts and alarms on the enterprise SIEM, connected to over 20,000 endpoints in the environment
• Monitored and maintained the health of enterprise security tools and the landscape of security threats
• Led monthly vulnerability and patch compliance scanning and reporting for enterprise endpoints; worked closely with respective client support teams to prioritize and manage mitigation tasks and patch deployment
• Increased C-level executive cyber security awareness and participation by introducing visual dashboards and short presentations featuring weekly highlights
• Participated in annual security audits and blue team tabletop exercises with the U.S. Department of Homeland Security (DHS)

Email Security:

• Project and technical lead for all enterprise email security products and seamless migration to hybrid (on-prem + cloud protection) and integration with Microsoft O365
• Configured email security feature enhancement and led POCs for Proof Point and Cisco Umbrella
• Created and maintained email filters, policies and alarms
• Blocked an average of 14,000-21,000 malicious emails daily; identified patterns and updated filtering rules for high-risk threats
• Interpreted email headers and SPF, DKIM and DMARC standards; set safelist and blacklist thresholds for quarantined email
• Integrated, normalized and reported on email security events with enterprise SIEM
• Developed, maintained and tracked metrics of email security awareness program and identified areas of success as well as opportunities for improvement

Internet Security:

• Project and technical lead for all software and hardware aspects of enterprise web filtering products
• Created and maintained website security filters, policies and alarms
• Responsible for all web security server maintenance including upgrades, patch deployment and hardware replacements if needed
• Analyzed security risk level of inaccessible websites and pages and blocked/allowed as needed
• Identified, analyzed and reported incidents of internet usage policy violations and worked with appropriate teams

Remote Access:

• Project and technical lead for all software and hardware aspects of enterprise security remote access
• Ensured 100% uptime for remote connectivity
• Maintained token database and seed records; tracked and maintained physical and virtual tokens
• Implemented usage policies and developed documentation for end users and 1st level technical support
• Conducted server backups and upgrades. Resolved tickets escalated from first and second level support teams

Cyber Security Project Coordinator:

• Headed cyber security projects and product implementations
• Coordinated Statements of Work (SOWs), meetings and communication with vendors, IT teams and stakeholders
• Monitored and facilitated project movement to ensure deliverables met requirements and deadlines
• Researched and recommended cyber security solutions, including ROI comparisons
• Tracked, negotiated and renewed cyber security enterprise software licenses

• Assisted attorneys in managing case files, including drafting and reviewing legal documents, preparing case summaries, and maintaining accurate and organized case records
• Served as a primary point of contact for clients, providing updates on case status, answering general inquiries, and facilitating communication between clients and attorneys
• Prepared and filed legal documents such as petitions, motions, and affidavits for family law and bankruptcy cases, ensuring compliance with court requirements and deadlines

• Trained and provided technical guidance to a team of 14 administrators in information security policies, processes and procedures
• Resolved complex issues escalated by other team members and first level support
• Liaised communication amongst technical teams and external vendors
• Reviewed access authorization to network resources and updated access policies
• Maintained/troubleshot server login scripts and user account access
• Technical support for network connectivity, user account access, external vendor connections via VPN and Citrix; controlled access authorization to network resources

• Maintained/troubleshot server login scripts and user account access.
• Technical support for network connectivity, user account access, external vendor connections via VPN and Citrix; controlled access authorization to network resources.

• Consistently one of the top three of 12 specialists
• First call resolution rate averaged 73%
• Phone support and desktop troubleshooting for 20,000+ users across 80 offices worldwide, supporting laptop and desktop users
• Scope of support ranged from network login and password resets, to configuration and troubleshooting of mainframe and LAN printers, in-house applications, various versions of Windows and Microsoft Office