EghtesadOnline: When Karim Baratov said on Facebook he’d paid off a mortgage and drove a BMW 7 series at high school, classmates thought he had rich parents. The money may have come, instead, from a secret life as a cyber hacker, including work for Russia’s top spy agency.

EghtesadOnline: Yahoo's disclosure that hackers stole user data from at least 500 million accounts in 2014 has highlighted shortcomings in U.S. rules on when cyber attacks must be revealed and their enforcement.

EghtesadOnline: Yahoo Inc came under renewed scrutiny by federal investigators and lawmakers on Thursday after disclosing the largest known data breach in history, prompting Verizon Communications Inc to demand better terms for its planned purchase of Yahoo's internet business.

EghtesadOnline: Yahoo! Inc.’s accounts were hacked in 2014 by cybercriminals rather than a state-sponsored party as the web portal claimed, according to an official with InfoArmor, a security company.

EghtesadOnline: Six senators on Tuesday demanded that Yahoo Inc explain why hackers' theft of user information for 500 million accounts two years ago came to light only last week and called the company's handling of the breach "unacceptable."

EghtesadOnline: Yahoo on Friday faced pointed questions about exactly when it knew about a cyber attack that exposed the email credentials of 500 million users, a critical issue for the company as it seeks to prevent the breach from affecting a pending takeover by Verizon Inc.