John Hawes reports:
A former student of Purdue University in Indiana has been sentenced to 90 days in jail for his part in hacking into college computer systems and changing grades.
Roy C. Sun is one of three former Purdue students thought to have been involved in the incident, which occurred between 2008 and 2010 when they were students at the university. The incident came to light in June 2013 after initial arrests were made.
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