Absolutely, and its a real problem.
For example: listverse.com/2017/01/03/top-10-nazi-collaborators-who-were-jews/Top 10 Nazi Collaborators Who Were Jews- Jozef Szerynski did not like being a Jew. After fighting in the Russian army during World War I, he tried to distance himself from the Jews by changing his birth name from Josef Szynkman to Jozef Andrzej Szerynski.
- After overseeing two mass deportations that caused the deaths of 254,000 Jews, Szerynski committed suicide using cyanide in January 1943.
So there you go. And this guy isn't even ranked number 1 on the list!
Some of the worst perpetrators of WWII atrocities were self-loathing Jewish collaborators cloaking themselves with Polish names.