What significant roles has Lev Feldman held in his career?
Throughout his career, Lev Feldman has held significant roles in information security at large global enterprises. He has served as a senior executive, including Senior Vice President in the CISO Office of Citigroup, a systemically important financial institution. His experience also includes leadership positions at MetLife, Marsh Inc, Merrill Lynch, and Salomon Smith Barney, where he developed and implemented comprehensive information security strategies.
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### Instruction:
What significant roles has Lev Feldman held in his career?

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### Response:
Throughout his career, Lev Feldman has held significant roles in information security at large global enterprises. He has served as a senior executive, including Senior Vice President in the CISO Office of Citigroup, a systemically important financial institution. His experience also includes leadership positions at MetLife, Marsh Inc, Merrill Lynch, and Salomon Smith Barney, where he developed and implemented comprehensive information security strategies.<|im_end|>