[thrawnjuxt]

Should we be afraid of tools like Intellij as well? I have been looking into Kotlin, and really like it so far, but the idea of a backdoor getting added to my apps by the compiler of the language is straight out of a nightmare.

[threeseed]

Just decompile your built JAR files and go through the source code yourself if you're worried.

http://www.benf.org/other/cfr/

Also JetBrains is based in Czech Republic not Russia.

[rounce]

JetBrains is registered in the Czech Republic but most development takes place in St Petersburg.