During its 20-year run, the chat service helped change how people across the world communicated with one another.
The company originally said more than 1 billion accounts had been affected.
Verizon says 6 million people are affected. Customer names, addresses, phone numbers and security PIN codes were available online.
A year after the deal was made, Verizon has officially acquired Yahoo, and Marissa Mayer announced her resignation as CEO.
Verizon paid the NFL $21 million to be the only one broadcasting a game from London this season.
The House has voted to block online privacy regulations issued during the final months of the Obama administration.
Major data breaches put the sale of Yahoo to Verizon in jeopardy. But the deal's still on — with a slightly lower price tag.
The wireless giant has launched a new plan called Verizon Unlimited, featuring — you guessed it — unlimited data, texts and talk time.
Half of Yahoo's board of directors will step down. The other half will move on to run Altaba for Verizon.
Verizon is blocking a "death update" to Galaxy Note 7s operating on its network.
And it all depends on your carrier.
Yahoo said at least 500 million user accounts were breached in 2014, and stolen information was reportedly auctioned on the black market.