About me
Hello, I’m Atahan, a cybersecurity and network engineer based in Istanbul, Turkey. I have a strong academic background and practical experience in the field of cybersecurity and network engineering. I graduated from Purdue University in West Lafayette, Indiana, USA with a Bachelor of Science in Computer Information Technology, where I completed a double major in Cybersecurity and Network Engineering Technology. I learned various skills and concepts related to cybersecurity and network engineering, such as penetration testing, vulnerability scanning, incident response, digital forensics, as well as designing, configuring, securing, and troubleshooting networks.
I am currently looking for new opportunities to apply my knowledge and skills in the industry. I am open to relocation or remote work, as I enjoy working in diverse and dynamic environments. I am also eager to learn new things and challenge myself in different projects and tasks. I have a passion for cybersecurity and network engineering, and I want to contribute to the advancement and innovation of these fields.
I would love to connect with you if you share my interests or have any questions about my background and qualifications. You can reach me through LinkedIn or email. Thank you for your time and attention!
What I do
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Incident Response
I identify and resolve security incidents that may affect your data and systems. I use OSSEC, ELK Stack, and SIEM to detect, investigate, and respond to cyber threats. I can monitor and analyze your hosts, collect and visualize your data, and generate alerts and reports for security monitoring and incident response. I can also perform OS hardening, which is the process of securing your operating system by applying patches, disabling unnecessary services, configuring firewall rules, enforcing password policies, etc. to reduce the attack surface and prevent unauthorized access. I can help you protect your assets, identify vulnerabilities, mitigate risks, and recover from incidents.
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Enterprise Networking
I design and test wired and wireless network infrastructure with various tools and technologies. I can use static, RIP, EIGRP, and OSPF routing protocols, OpenVPN, IPsec, and L2TP VPN protocols to enable and secure data exchange between different networks. I can also use VLANs and Switching functions to segment and optimize network traffic. I can install and configure firewalls to protect network resources from unauthorized access and attacks. I can deploy and maintain wireless networking solutions to provide wireless access to users and devices. I use Cisco, Aruba, and Ubiquiti networking devices to build reliable and scalable network infrastructure.
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Digital Forensics
I perform digital forensics analysis on disks, disk images, mobile devices, and cloud services with tools like Autopsy, OSForensics, AXIOM, and Cellebrite. I can extract, examine, and report evidence from various sources, such as files, emails, chats, browsers, etc. I can also recover deleted or hidden data, decrypt passwords, and identify malware. I can handle different types of mobile devices, such as android and ios, and access cloud data from platforms like Google Drive, iCloud, Dropbox, etc.
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Virtualization
I am skilled in virtualizing or containerizing various operating systems, applications and devices with tools like VMware vSphere , VMware ESXi, and Docker. I can manage virtual machines, storage, and networking resources, as well as create and run containers. I can also set up and secure small enterprise networks with firewalls, switches, zones, and active directory. I can use virtualization to make operating systems isolated, scalable, and portable.
