Complex sentence: Over the years Hadnagy has become a sought-after writer and speaker, having spoken and trained at events such as RSA, Black Hat, ISSA and given various presentations for corporate and government clients.
Split into simpler sentences: Over the years Hadnagy has become a sought-after writer and speaker. He has spoken and trained at events such as RSA, Black Hat, ISSA and given various presentations for corporate and government clients.