After hacking, Yahoo Mail users advised to reset passwords, heed security tips

New York: Usernames and passwords of some of Yahoo's email customers have been stolen and used to gather personal information about people those Yahoo mail users have recently corresponded with, the company said Thursday. Yahoo didn't say how many accounts have been affected. Yahoo is the second-largest email service worldwide, after Google's Gmail, according to the research firm comScore. There are 273 million Yahoo mail accounts worldwide,

Yahoo resets passwords after email hack

Yahoo has been resetting email accounts that were targeted in a cyber-attack apparently aimed at collecting personal information from recently sent messages, the company has said. 

The cyber-attack was a coordinated effort by hackers who tried to log into many email accounts with stolen usernames and passwords, Yahoo said. However, the company did not mention how many accounts were affected.