An informal band of researchers is working over Christmas to prevent hackers from disrupting online services, following PlayStation and Xbox incidents in 2014 (Robert McMillan/Wall Street Journal)

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Robert McMillan / Wall Street Journal:
An informal band of researchers is working over Christmas to prevent hackers from disrupting online services, following PlayStation and Xbox incidents in 2014  —  Merry band of security buffs spend holidays on alert to make sure cyber-Grinches don't spoil the fun