It’s about more than just improving it.

Did you just get a notification from another Fortune 500 company asking you to change of all your passwords? If not, you will soon enough.

It’s almost fashionable to become the victim of a data breach these days, or at least you’d think so, given the who’s-who list of companies announcing them. Earlier this month, 32 million Twitter TWTR 0.48% passwords went on the market. And just days before that, password stores harvested from previous security breaches at LinkedIn LNKD -0.18% , Myspace, Tumblr, and Fling were posted for sale online, leaving 642 million accounts compromised. Add these to the 1 billion-plus passwords already out there on the black market and the fact that people tend to use the same, simple passwords across the web, and it’s official: We don’t just have a password problem—we have a password crisis.

With this latest leak of passwords stolen from LinkedIn, even Mark Zuckerberg was found to be using a very simple password—“dadada”—across at least two different web applications, and chose not to enable strong authentication when it was available at these sites.

Source: What Mark Zuckerberg’s Password Hack Says About Cybersecurity – Fortune