In the previous linear cryptanalysis of 288-round Trivium

it is problematic to treat the key as a random and changing value in the process of analysis.In this way the attackers actually cannot attack the cipher with the inaccurate linear bias.For the problem above

we present the linear cryptanalysis of 288-round Trivium afresh under chosen initialization vector (IV) condition.Because the key bits are fixed

the nonlinear term which consists of key bits should be constant and does not produce a linear bias

and we find a linear approximation with the linear bias of 1.9E-6 on the condition that 10 bits of the IV are fixed.