USA TODAY’s Matt Krantz explains why Yahoo CEO Marissa Mayer was awarded so much money as the company’s fortunes waned.

Internet portal and search firm Yahoo may confirm this week a massive data breach that exposed information about tens of millions of its users, according to the technology news website Recode.

The confirmation would follow a Yahoo investigation into claims that surfaced in early August that a hacker with the name “Peace” was trying to sell the usernames, passwords and dates of birth of Yahoo account users on the dark web — a black market of thousands of secret websites. A Yahoo representative was not immediately available to comment on the report.

The breach may affect up to 200 million user accounts,…