Today’s top story: How to calculate your retirement number. Also in the news: Hilton HHonors program suffers a data breach, the biggest mistakes people make when saving for retirement, and a beginner’s guide to taxes for newly married couples.

3 Ways to Calculate Your Retirement Number
Determining how much you need to retire.

Newest Target for Data Thieves: Your Hilton HHonors Points
Thieves are selling HHonors points on the dark market.

The 6 Biggest Mistakes People Make When Saving for Retirement
Realistic goals are key.

A Beginner’s Guide to Taxes When You’re Married
It’s a whole different world.

5 Habits of Highly Effective Credit Card Users
Learning from the pros.