News bites: South Korea blames North Korea for cyberattacks

South Korea blamed North Korea for launching a series of cyberattacks that took down 69 websites last month, The New York Times writes.

The recent leaks about National Security Agency surveillance programs has opened a door for opponents to challenge their constitutionality, The Washington Post writes.

The stock price has soared at Yahoo after Marissa Mayer took the reins of the company a year ago, but it remains to be seen if it will be able to complete a full turnaround, The Wall Street Journal says.