A data breach at JP Morgan Chase and six other institutions caused 83 million accounts to be compromised.
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The world's longest treasure hunt ended after 31 years.
The last Prince of Wales, Dafydd ap Gruffudd, was the first person recorded to have been hanged, drawn, and quartered.
A Neptune-sized exomoon became the first one discovered outside the Solar System.
Violet Stewart Piercy, a long-distance runner from England, set the first recorded marathon win for women at 3:40:22.
Singers Paul McCartney and Michael Jackson released their song 'Say Say Say.'
