Alex Ionescu

Chief Architect at Crowdstrike, Alex Ionescu is a world-class security architect and expert in low-level system software, kernel development, security training and reverse engineering. He is coauthor of the last two editions of the Windows Internals series, along with Mark Russinovich and David Solomon. His work has led to the fixing of many critical kernel vulnerabilities, as well as to over a few dozen non-security bugs. Ionescu is also the founder of Winsider Seminars & Solutions Inc., a company that specializes in low- level system software, reverse engineering and security trainings for various institutions.


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