Passwords continue to be the most common way to prove our identity online. A combination of a username and a password known only to the user provides access to our online accounts and data – and hopefully keeps unauthorised individuals out. As a security measure, though, passwords are relatively weak. People are often predictable in how we choose our passwords, for example – making them less secure. With increasing volumes of usernames and passwords being leaked online, what can we do to keep our data more secure? Here are our top tips for stronger passwords.