George Pletsis Email & Phone Number

Athens, Attiki, Greece

• Security / vulnerability assessments and advanced penetration tests• Red teaming engagements, including active directory attacks, privilege escalation, command and control• Mobile and web applications penetration tests• Provide secure design, implementation, and testing standards tailored to specific technical platforms across business areas• Work with software architects to influence secure design and implementation• Develop and maintain Software Security best practices and policy while maintaining coverage and line of sight to corporate policy and regulatory drivers

Athens, Attiki, Greece

• Penetration Testing services (infrastructure, network, web applications, mobile applications, Wi-Fi, OT, ICS systems, etc.)• Vulnerability Assessments• Advising senior leadership on emerging threats and proposing remediation actions• Technical project manager on security assessments• Penetration Testing reports auditing

Greece

• Team Leader of Cosmote OMA Online Charging System • Technical Project Leader for Cosmote OCS Upgrade • Technical Project Leader for Cosmote OCS Voice Expansion• Provide Technical Consultation• Budgetary Estimation and Project Feasibility• Translate Customer Needs and Requirements to Tasks

• Linux Operation and Administration• Installation and Integration of Online Charging System Nodes • Developed Testing Scripts and Procedures• Developed Security Standards, Policies, Automation Scripts• Designing Business Configuration• Supporting end to end Testing, Validation and Troubleshooting• Troubleshooting protocols: Gy, SS7, DIAMETER, SCAP, CAMEL• Emergency Engineer 24/7

Greece

Administration , Deployment and Maintenance ofVirtualization Solutions:• XenApp • XenServer • XenDesktop • Hyper-VNetwork Solutions: • Netscaler • Access Gateway • PacketShaper • Branch Repeater • XenMobileProjects-Tasks• Deployment of small-scale xenapp infrastructure on customers' site ( 3 Projects )• Expanding, troubleshooting and administration of a telecommunication company's enterprise-size xenapp infrustucture ( 1 year ) ( xenapp, netscaler , CPM , GPO , web interface , CAG, xenserver )• 2nd line of Support for a telecommunication company enterprise xendesktop infrastructure ( 3 months )• Responsible for the demo and POC environment on Precicom's premises ( Cloud Gateway ,XenMobile )

Greece

• Handling and technical support of specialized applications on the computer network in Microsoft Windows Server environment• Monitoring and administration of computer networks security• Organizing and controlling the 3rd level maintenance and repair of computer hardware and printers• Design and implementation of a streaming server software system for real time video delivery• Training of staff in military applications, basic functionalities of MS Windows-Office and information and privacy policy systems of the Hellenic Army

Greece

M.Sc. “Computer And Network Security”, Information Technology, Awarded With “Distinction”

Master Thesis Title: “Host-based Botnet Detection with Process Classification”

Informatics And Telecommunications, 7.23/10

Thesis Title: “Tools and Methods for Detecting Programming Vulnerabilities”

High School Degree, General Studies, 18.6/20