Fraizer campbell scored City's winner just 2 mins into his debut and the win keeps Cardiff ten points clear at the top of the Championship.
With games starting to run out Cardiff hold pole position in the race for the Premier League.
"It is a cruel game sometimes. Everything about this match was cruel," Warnock said.
"We missed open goals and the young lad (Byram) made a schoolboy error. I thought Mike Dean was brilliant but he didn't see the handball, when we all appealed, because he was in a bad position and should have been in a better one.
"He had three or four bodies in the way. The linesman could have helped him out, but they don't, do they. Then there was another handball in the 93rd minute that wasn't given.
"Our two centre-halves were magnificent, we played some good stuff against the top-of-the-table team and were better than them, so it's very frustrating that we got nothing."
At the other end of the scale Malky was happy to come away three points.
“We played really well today and came here with a game plan," Mackay said. "While in the last fifteen to twenty minutes we really had to dig in as balls were being rained down on us. The win is a positive, as is another clean sheet, something the near five hundred long travelling fans can enjoy on the way home tonight.
“Today is also about how we defended as a team. I’ve already gone on record in my belief that David (Marshall) is the best keeper in this division. He always does well for us and today had two saves to make, which on numbers alone I’m happy they were restricted to at Elland Road, especially after their recent run of home form. That stat is a credit to my whole team in the way we defended when needed, while when called upon Marshy was as dependable as ever.”
Source: Cardiff City Online