This paper explores the European suspicion against the migrants and analyses the European security concerns regarding terrorist attacks. The paper shows that Europeans' wrong perception about migrants has been created by homogenizing the category of migrants as well as politicizing the issue of migrants for electoral maneuvering. The suspicion has been grown after the 9/11 terrorist attack on America. Islamic radical organization Al-Qaeda perpetrated this attack to achieve its political agenda. This attack gave legitimacy to America and Europe to suspect everybody who is coming into their area. The studies on linking migration with terrorism show scanty evidence, but scholars have biased opinions on this. The paper explores all these issues.