Hacker Cernăianu Manole Răzvan, known as TinKode, has been given a two-year suspended prison sentence and ordered to pay around £75,000 (A$118,000) in fines.
Răzvan was arrested in January for his part in a number of attacks on Oracle, MySQL.com, NASA and the British Royal Navy in 2010, The Hacker News reported.
He was sentenced on September 26 and received six prison sentences of one or two years for separate computer-related offences, according to Cernianu's case file summary on the Romanian Ministry of Justice Web portal.
The offences included: gaining unauthorised access to a protected computer system; transferring data from a computer system without authorisation; affecting the normal operation of a computer system by deleting, modifying or sending electronic data; creating, selling or distributing a devices or a computer program designed to be used in computer crimes; and creating, selling or distributing a password or access code without authorisation that could be used to access a computer system with the intention of committing a computer crime.
A report by Softpedia said that Răzvan will have to report back on a monthly basis to victim protection and offender social reintegration services and notify authorities in case he wants to change his residence or travel outside of his current residence for more than eight days.
Graham Cluley, senior technology consultant at Sophos, said that an online petition, started by TinKode's sympathisers, failed to receive significant support (a hoped-for 5,000 signatures had not yet reached 200 signatures at the time of writing.