Mail.ru denies mass password breach; researcher stands by findings

By Eric Auchard FRANKFURT (Reuters) - Russia's top Internet company, Mail.ru said on Friday a sliver of its users' email accounts was vulnerable while denying that tens of millions of other users were at risk after researchers found its data circulating among cyber criminals. The company said in a statement credentials tied to its email accounts appeared to have been stolen from other, unrelated sites such as social networks or e-commmerce sites that ask users to sign up using email addresses li