Thousands of employees in the US Department of the Interior are using accounts that are easily hacked::The Interior Department is tasked with protecting the country’s natural resources, like gas pipelines. Hundreds of its senior officers even used “password-1234” on their accounts.
This is the most likely cause. My work has this too, but it’s every 30 days, and you can’t use the same password as any of your last 21 passwords. Which means I need 21 unique passwords. So it’s Password1, Pasword2, etc until Password 21, when I then loop back around. Great job security team!
Which also means your company is storing your old passwords which is a big security issue