Essays are used to learn more about your reasons for applying to the course, university or company and your ability to benefit from and contribute to it. Your answers will let you state your case more fully than other sections of the application, and provide the evaluator with better insight about you and how you differ from the other applicants. In marginal cases, the essays are used to decide whether an applicant will be selected. The purpose of the admissions essay is to convey a sense of your unique character to the admissions committee. The essay also demonstrates your writing skills as well as your ability to organize your thoughts coherently.
In 2013, a mysterious group of hackers that calls itself the Shadow Brokers stole a few disks full of National Security Agency secrets. Since last summer, they've been dumping these secrets on the internet. They have publicly embarrassed the NSA and damaged its intelligence-gathering capabilities, while at the same time have put sophisticated cyberweapons in the hands of anyone who wants them. They have exposed major vulnerabilities in Cisco routers, Microsoft Windows, and Linux mail servers, forcing those companies and their customers to scramble.