Only in the 19th century did the answer become clear, when Niels Henrik Abel, a Norwegian mathematician, showed that the quintic is insoluble.

ECONOMIST: The history of mathematics

If you watch my interview with its founder, Niels Henrik Rasmussen, you will learn that Secunia maintains and licenses a comprehensive vulnerability data base of all (well, a lot of) products, not just Microsoft.

FORBES: Vulnerability Intelligence Versus Vulnerability Management