What can happen if you don't have a strong password?

Your stolen passwords potentially open the door to your personal and work accounts. This makes them extremely valuable on the black market. Because so many people are careless with their passwords, even login data from a mundane website could give hackers a direct path into more important accounts. All they need to do is try your known password (and thousands of permutations generated by software) across your accounts. This method works so well that exploiting weak passwords is now the leading tactic of cyberattack by a wide margin.