Sentence:  Dotcom mania was slow in coming to higher education, but now it has the venerable industry <WSD>firmly</WSD> in its grip. Since the launch early last year of Udacity and Coursera, two Silicon Valley start-ups offering free education through MOOCs, massive open online courses, the ivory towers of academia have been shaken to their foundations. 
Meaning of the word marked with <WSD> tags:  Securely.