It's pretty safe as long as you don't be too Chinese over there. Avoid using WeChat or Michat, a lot of the scammers and kidnappers using those apps. Don't go around speaking mandarin,.coz that's how they target you for KK.

Best advise if you look Chinese and wanna go there, act like your an ABC or banana Chinese.

Massage parlors are safe, just go to those well established big ones, don't try to be a smartass and risk danger by wanting to save that few ringgits for cheaper service.