500 million Yahoo email accounts were affected in the largest data breach ever.
So much about the Yahoo breach is still unknown, including how it happened and what data was actually lost.
However, here are some key consequences of the breach which could impact Yahoo in the coming months and possibly years.
There have already been reports of disgruntled Yahoo users launching lawsuits against the internet company.
One California-based group of plaintiffs filed a class action on behalf of all of those affected by the breach. This was done under several parts of the California Civil Code such as the Consumer Legal Remedies Act, the Federal Stored Communications Act and the Unfair Competition Act.
A man called Ronald Schwartz has also filed a suit in New York against Yahoo.
Considering that the breach affected 500 million accounts, the pay-outs could be massive.