
All it takes is one massive data breach, and those passwords are out in the wild, ready for criminal hackers to employ in attacking every other site where they may have been used. In fact, studies have shown that nearly two-thirds of people use the same password for multiple online services, and many use one password for everything from online banking to fly-by-night shopping sites. Unless you’re a person who is overly security conscious, chances are you’ve used the same password on more than one online service. Then there’s the problem of password reuse. This results in passwords being jotted down insecurely in daytimers and post-it notes stuck on note boards and computer screens. Firstly, many people choose simple and common passwords that are easy to remember - and easy for hackers to guess - while some systems force users to create such cumbersome passwords that they’re more likely to forget them. However, passwords are also the weakest link in your security chain - for several reasons. While secondary authentication measures like one-time passwords and two-factor authentication have come into play in recent years, your password is still your first line of defense against intrusion.

For the past few decades, passwords have been the most common way to secure your online accounts.
