A 25-year old Massachusetts native has been sentenced to four years in prison for hacking into several computer networks and email addresses. Cameron Lacroix of New Bedford was able to get his digital hands on credit and debit card data from thousands of people, as well as gain entry to a local Bay State police department server and a police chief’s email account.

According to the United States Department of Justice, Lacroix hacked into networks across the country to steal the personal information as well as attempt to alter academic records. He pleaded guilty to two counts of computer intrusion and one count of access device fraud back in June. On Tuesday, he was sentenced to four years behind bars.

Lacroix admitted that the credit and debit card data he stole was from over 14,000 individuals between May 2011 and May 2013, and that the academic records he tried to revise were at Bristol Community College, where he was a student.

“He repeatedly hacked into BCC’s computer servers and used stolen log-in credentials belonging to three instructors to change grades for himself and two other students,” reported the Justice Department.

The department did not disclose which Massachusetts police department was hacked into.

The U.S. Attorney’s Office for the Northern District of California, too, filed charges against Lacroix though that case has since been transferred to Chief Judge Patti Saris.