Tamer Sahin, born in 1981, is an Entrepreneur and Cybersecurity professional. At the age of 22, Sahin worked on the philosophy of Ethical Hacking and concentrated on institutionalizing his professional life. He has consulted on various cases concerning Cybersecurity at both national and international level. He used his talent as an Ethical Hacker, Cybersecurity Professional to detect the vulnerabilities of numerous computer systems and developed defense strategies for some of the leading organizations in the private sector and also in public institutions.

In this context, he established the first commercial Cybersecurity Threat Intelligence Infrastructure which was the first Cybersecurity Threat Intelligence R&D product developed in Turkey (2011). This software and infrastructure has been used for many years in Turk Telekom (Turkey’s largest telecom provider) and Isbank (Turkey’s largest bank) companies. Tamer is one of the developers of “Mindwall IDS” that is Turkey’s first information security software developed for the USA and for the global market. The Mindwall Intrusion Detection Software received early stage investments from the USA and has been tested by such institutions as JP Morgan Chase Bank, Citibank and AT&T. During the COVID-19 outbreak, Tamer Sahin work on comprehensive Ethical Hacking project carried out at a market leading German company. This German based company offers professional management and infrastructural services for the storage, distribution and logistics stages of Pfizer-BioNTech COVID-19 vaccine. With this work, he contributed to the safe delivery of the vaccine to the whole world.

Tamer Sahin in collaboration with such world-renowned software developers as Microsoft, HP, Redhat and AOL, discovered the vulnerabilities in the software they developed. Sahin enriched the world of the information security by publishing more than 50 security advisories that are registered under his name. He also discovered the critical Zero Day security vulnerabilities in some software companies products; published the first security vulnerability announcement in Turkey & EMEA region on Bugtraq and other global security platforms in 1999.

The New York Times journalist and US Cybersecurity and Infrastructure Security Agency (CISA) advisor Nicole Perlroth, referred in her best seller book “This Is How They Tell Me the World Ends“, to Tamer Sahin and described him as “the first person in the world who found and sold a Zero Day vulnerability“.

News about Sahin has been published in many written/visual media, and also was discussed as lecture topics and projects at educational institutes such as at the Istanbul Technical University, Bilkent University, Isik University, Private Izmir American College. Sahin gives speeches/seminars and leads panels at universities and corporate companies across the world in order to transfer his knowledge to other people. He wrote about his experiences in the book “Hacker’in Akli” (Eng: Hacker’s Mind), published by “Dogan Kitap”. The book made three editions, was on the bestseller list for a month. It is listed in the archives of the National Library of Congress Washington DC, Princeton University, Columbia University, Harvard University, The Library of Grand National Assembly of Turkey, Patrick Henry College, Salem College, Birmingham-Southern College. Tamer Sahin was asked as the final question in the Turkish broadcast of the world-famous quiz TV show “Who Wants to Be a Millionaire?”. Moreover he has been the subject of the Republic of Turkey Ministry of National Education college achievement exam as a question.

His clients include world-class companies and government agencies like Philip Morris, United Biscuits, Nestlé, Hilton, Saint Gobain, Godiva, HDI Insurance, Heinemann, Deutsche Welthungerhilfe, Kässbohrer, CNN Turk, Turk Telekom, Isbank, Eurasia Tunnel, Government of the Philippines, The Grand National Assembly of Turkey, Central Bank of the Republic of Turkey, Savings Deposit Insurance Fund of Turkey, Borsa Istanbul, The Union of Chambers and Commodity Exchanges of Turkey, Radio and Television Supreme Council of Turkey.

Sahin has the OSCP, OSWP, OSWE, eCPTXv2, CRTE, CEH Practical, PenTest+, Security+, CNSS, TSE professional Ethical Hacking/Cybersecurity certificates, which are accepted as the global industry standards. He is a graduate of the Faculty of Economics, Department of International Relations. He still works on providing solutions for the leading companies in the sector, under the roof of TerraMedusa. TerraMedusa are pioneer in the Cybersecurity sector of which he is the founder and Ethical Hacker of.