The Nanterre court outside Paris gave the same suspended 12-month sentence to Landis' former trainer, Arnie Baker, The Wall Street Journal reported Thursday.
The French judges ruled Landis and Baker benefited from the hacking though there was no direct evidence linking the men to the crime.
Prosecutors were expected to abandon arrest warrants for the two men because their sentences were suspended.
Alain Quiros, who confessed to the lab hacking, received a six-month prison sentence and was fined 4,000 euros.
Attorneys for the two Americans told the court their clients used documents from the lab to prove Landis' innocence in a 2006 doping incident but were unaware they had been obtained illegally.