The nonprofit that oversees Wikipedia briefly enforced a 'read-only' mode on Thursday morning as users spotted code designed ...

The Wikimedia Foundation suffered a security incident today after a self-propagating JavaScript worm began vandalizing pages ...

The tiny nucleus of the comet (not visible) is surrounded by a bright halo of gas known as the coma. A long tail stretches away from the comet, and we see hints of rays, jets, streams and filaments.