Hate to break it to you, but some of your passwords are already out there on the internet.
Not because you did anything wrong, but because companies get breached all the time, and login details are worth money!
These days, credentials (usually email and password combinations) are a commodity, traded as routinely as any other good. Email and password combinations are stolen, bought, sold, and given away on the dark web as well as on the regular internet. At this point, it’s a statistical certainty that some passwords of yours are circulating.
You may be wondering: who cares? If so many passwords are being bought and sold, why is yours a risk?
It’s how attackers put those big lists to work. They use automated tools to take leaked username and password pairs and test them against hundreds of websites: email platforms, banking apps, corporate portals... everything you have a login for.
The process is called “credential stuffing.” It requires almost no skill, and it’s become even quicker with AI tools. The attacker doesn’t need to break through your company's defenses. They just need a password you used somewhere else, years ago, on a site you may have forgotten you ever joined. If that password is the same one you use today, the old breach becomes a fresh key.
Attackers don’t need to target you personally to take advantage of that.
If you used the same (or similar) password across accounts, even years apart, an old breach can unlock something you use today. Sometimes that’s your email. Sometimes it’s your workplace.
That’s where personal habits become a professional concern, and vice versa! Many people use the same password, or small variations of it, across personal and work accounts alike. This is known as password reuse, and it’s a common habit. If you used “Lasagna2016” for your recipe blog ten years ago, and found it easy to remember, you might be using “Lasagna2026” for your work laptop password now. It feels harmless, but to an attacker, it’s predictable—and it works.
The fix doesn’t require technical skill, just two changes:
So, while reducing, reusing, and recycling are awesome practices when it comes to coffee cups, clothes, and home goods... it’s best to keep your passwords single-use!
