Yes. It is a violation of criminal law.

A misprision of a felony is the concealment of a felony from the authorities, but without actually giving any degree of active support to its commission (i.e.: the person is not considered an accomplice to the crime).

For example: Person 'A' robs a bank and kills a teller. He goes to Person'B's home and asks to hide out and tells Person 'B' that they just robbed bank. Person 'B' does nothing, but continues to hide the bank robber anyway. Person'B' has committed a Misprision of a Felony.

If it opccurred after your 18th birthday it is a permanent part of your criminal history record.

'Misprision of Felony,' is the like the concealment of a felony. BUT you must not have given ANY type of assistance to the perpetrator WHATSOEVER, in the commission of the crime (or afterwards), because if it can be proven that you did, you become an "Accessory After The Fact" and can be charged with the offense.

This particular crime can be charged as a FEDERAL offense under USC, Title 18, if the original crijme was a federal offense. If not, Georgia and all other states have similarly worded offenses (misprision) on their statute books. MISPRISION OF FELONY (Federal) - Whoever, having knowledge of the actual commission of a felony cognizable by a court of the U.S., conceals and does not as soon as possible make known the same to some judge or other person in civil or military authority under the U.S. 18 USC.

http://www.lectlaw.com/def2/m034.htm