Young made his way into the Sociedad box midway through the second half, and when tugged by Markel Bergara the 28-year-old had no hesitation in going to ground.
United missed the resulting penalty ? Robin Van Persie being denied by Claudio Bravo ? but Moyes has defended Young on what some viewed as a ?soft? decision.
"All I know is he got a penalty kick from a decision,? the United manager told the BBC.
"I don't know anything about reputations or anything. The boy certainly tugs him in the box."
The decision to defend Young this time is a far cry from Moyes? comments following the 2-0 home win over Crystal Palace last month, when the winger was booked for trying to deceive the referee.
"I don't want my players diving. It's not what I want,? said an angry Moyes in September.
"Dikgacoi definitely throws his leg out but Ashley put his leg into his leg."
The change of tune may be a sign that the Scot is moulding into the job at Old Trafford, as defending players blindly was a strong trait of the majority of Sir Alex Ferguson?s reign.
The 0-0 draw leaves United on top of what is becoming a tight Group A with three points splitting the Premier League champions, Bayer Leverkusen and Shakhtar Donetsk.