Computer users over the age of 55 employ passwords that are twice as secure as passwords used by those under 25 years old. A recent study conducted by Joseph Bonneau, a computer scientist at the University of Cambridge, analyzed almost 70 million passwords belonging to Yahoo users around the world. Ensuring that data was kept anonymous and passwords could not be tied to individual accounts, Bonneau looked at password strength alongside other data such as age and locale. Beyond the relationship between age and security, the researcher found that German and Korea speakers generally use the strongest passwords, and the presence of credit card data on a user’s account seemingly does not prompt that user to avoid weak passwords such as “123456.” Bonneau’s study was the largest of its kind, and he unveiled his findings at the Symposium on Security and Privacy in San Francisco, California earlier this month.