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Aleksandr GryzlovAG
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Aleksandr Gryzlov

@aleksandrgryzlov

Cybersecurity Analyst at Indorama Ventures Xylenes & PTA, LLC who improved compliance scores from 60% to 75%.

United States
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At Indorama Ventures Xylenes & PTA, LLC, I established and sustained an ISO/IEC 27001-aligned Information Security Management System spanning IT and OT cybersecurity. I designed and implemented segmentation architectures aligned with NIST SP 800-82, ISA/IEC 62443, and the Purdue Enterprise Reference Architecture.

I engineered controls for PLC, SCADA/HMI, and Safety Instrumented System environments, including Schneider Electric Triconex. Using Claroty, I assessed OT vulnerabilities and coordinated production-safe remediation; I also monitored telemetry from 1,000+ IT/OT endpoints and network devices with Splunk SIEM and EDR technologies.

I led cross-functional incident response and improved cybersecurity compliance assessment results from 60% to 75%, achieving 100% closure of identified audit findings within 30 days. Earlier, as a Cybersecurity Intern at Summit 7 Systems, I supported NIST SP 800-171 and CMMC Level 2 assessments and Microsoft Government Cloud work for Defense Industrial Base clients.

Experience

Work history, roles, and key accomplishments

IL
Current

Cybersecurity Analyst

Indorama Ventures Xylenes & PTA, LLC

May 2023 - Present (3 years 4 months)

Established and sustained an ISO/IEC 27001-aligned ISMS, designed IT/OT network segmentation architectures, and engineered cybersecurity controls for PLC, SCADA/HMI, and SIS environments. Led incident response, conducted weekly risk assessments, and managed a $250K security budget.

SS

Cybersecurity Intern

Summit 7 Systems

Jun 2022 - Apr 2023 (10 months)

Supported cybersecurity and compliance engagements for Defense Industrial Base clients, including NIST SP 800-171 assessments, CMMC Level 2 readiness, and Microsoft 365 GCC High/Azure Government migrations. Configured identity and access controls and supported Microsoft security technologies.

Education

Degrees, certifications, and relevant coursework

Athens State University logoAU

Athens State University

Master of Science, Cybersecurity

Completed a Master of Science in Cybersecurity in April 2025.

Athens State University logoAU

Athens State University

Bachelor of Science, Computer Science

Earned a Bachelor of Science in Computer Science with a concentration in Cybersecurity in 2023.

Calhoun Community College logoCC

Calhoun Community College

Associate of Science, General Studies

Earned an Associate of Science in General Studies with a focus on Computer Science in 2021.

Tech stack

Software and tools used professionally

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