Ferrari branded as "incomprehensible" Thursday's decision by Formula 1 authorities not to punish McLaren in a spying controversy which has rocked the sport over the last month.
The Italian team said that the FIA council, which accepted that McLaren had been in possession of confidential Ferrari information, had damaged the credibility of the sport with its ruling.
Earlier on Thursday Formula 1's governing body said no penalty could be imposed on McLaren because there was insufficient evidence that information leaked to the British racing team had been exploited in any way.
The ruling leaves the championship race unchanged with McLaren rookie Lewis Hamilton on top, two points ahead of team-mate Fernando Alonso and 11 points clear of Ferrari's Felipe Massa.
If McLaren had been found guilty of fraudulent tactics, the team risked losing points or even being thrown out of the championship.
In its statement, Ferrari stressed that McLaren had been deemed guilty of breaching article 151c of the international sporting code by having possession of confidential information belonging to a rival.
"Ferrari believes it is incomprehensible that, once the violation of sporting fairness has been established, imposing a penalty is not a logical and inevitable consequence," the Italian team said.
"Ferrari believes that all this is highly prejudicial to the credibility of this sport," it continued.
The statement added that lawyers would press ahead with legal action already under way against McLaren's former chief designer Mike Coughlan.
The spying saga which has overshadowed recent Grand Prix races centres on Nigel Stepney, who Ferrari recently dismissed as their head of performance development, and his contacts with Coughlan.
Coughlan is said to have received a 780-page dossier of Ferrari secrets from Stepney in April this year, soon after the start of the 2007 grand prix season.
The F1 council's ruling invited Stepney and Coughlan to explain why they should not be banned from F1 for "a lengthy period".
It also warned that if evidence were to emerge showing that the information was in fact used by McLaren then the team could be thrown out of both the 2007 and 2008 championships.
McLaren have said that nobody at the team, other than Coughlan, knew about the leaked information until they were informed by Ferrari on July 3.
This claim was cast into doubt on Thursday by a report in Italy's Corriere della Sera newspaper which cited a document filed by Ferrari lawyers in London.
The document listed five occasions on which McLaren executives were allegedly made aware of the information in Coughlan's possession.
Ferrari driver Massa, who was carrying out tests on his car near Florence on Thursday, refused to comment when asked about the FIA's ruling.
"I'm not the one who has to make judgments. I'm here to drive the car," he said.
