Other submissions. Many votes, no comments:

https://news.ycombinator.com/item?id=8526843

    White House computer network hacked
    (mashable.com)

https://news.ycombinator.com/item?id=8526769

    White House computer network breached
    (bbc.com)

https://news.ycombinator.com/item?id=8525191

    White House Computers Hacked
    (washingtonpost.com)

https://news.ycombinator.com/item?id=8524606

    Suspicious cyber activity at White House
        detected, addressed
    (reuters.com)