Usually a Black Hat is a person who uses their knowledge of vulnerabilities and exploits for private gain, rather than revealing them either to the general public or the manufacturer for correction. Many Black Hats promote individual freedom and accessibility...

Mens running shoes are generally stiffer than womens shoes. This allows for more support and motion control whereas womens shoes tend to be a little more flexible. For a long time, running shoe manufacturers specialized mainly in the construction of mens running shoes and basically build scaled down versions for women. In recent years however, many manufacturers have taken to designing running shoes specifically for women which take into consideration the differences in the build of womens feet.