Troubled internet portal also said it would cut its workforce by 15%, shedding 1,700 jobs.
Several potential buyers have expressed interest in buying Yahoo.
Internet giant Yahoo! denies claims that Mayer sacked dozens of staff who were on the wrong list.
Yahoo is shutting down its operations in the two countries to cut costs and consolidate its business.
Avaaz has accused Yahoo Japan, a joint venture with Softbank, of selling 12 million tonnes during 2012-14.
Carnegie Mellon says Yahoo's database is a significant contribution for researchers.
Silicon Valley leaders to work with US government to fight militant propaganda online.
As many as 1,000 jobs expected to be cut this year as part of revamp plan.
Tech companies are under increasing pressure to respond to militants' manipulation of social networks.
Select users of Gmail have received invites to test the system, which is similar to one already rolled out by Yahoo.
Internet company said it would alert users whose accounts may have been targeted
Tech body members include Google, Apple, Facebook, Microsoft, Yahoo and IBM.
McKinsey to help Yahoo decide on which units need to be sold, closed down or invest more in.
Yahoo Mail has been updated with the Account Key feature to eliminate passwords while accessing emails.
NYU professor Scott Galloway says Marissa Mayer will go down as being the most overpaid CEO in history
Yahoo boss Mayer will only take two weeks maternity leave but what is she missing out on?
CEO Jonah Peretti sent a staff email saying the deal offers a wide range of opportunities.
Polyvore is expected to accelerate Yahoo's Mavens growth strategy through its offerings in social, native and mobile.
Yahoo Livetext messaging app has no sound, but shows live video of your face to friends as you type
Game between Buffalo Bills and Jacksonville Jaguars will be available in Web browser, within Yahoo app on mobile phone, or on television equipped for streaming video.
A UN report says that backdoor encryptions are undermining our basic human rights.
Yahoo is accused of scanning mails from non-Yahoo users to create targeted advertising scheme.