Usually a Pseudo Random Generator is supposed to be IND-CPA secure.
But apparently, it is not in some cases such as the following:
A PseudoRandom Generator $G$ has expansion factor $n + 2$.
Encrypt $m \space \in \{0,1\} ^ {n+2}$
Choose a random value $v \leftarrow \{0,1\}^n$
Then send $(v, G(v) \oplus m)$
The question is why is it not IND-CPA secure and also not IND-EAV secure?