You are not cursable (made up word) except involved in sin!

Your enemy cannot place a curse on you except he ensnares you into sin. So Balaam advises Balak king of Midian to entice the children of Israel into the sin of fornication and they got terribly judged for it. He realized that he couldn't put a curse on them as the Lord had blessed them but then he set them up for sin and the plague befell them horribly such that 24,000 of them died by the Lord's judgment. According to Numbers 31:16 quote, “Look, these women caused the sons of Israel, through the counsel of Balaam, to turn unfaithfully against the LORD at Peor, so that the plague struck the congregation of the LORD." 
Additional references for your study: Revelation 2:14, Number 22-25, 2nd Peter 2:14-16.
Basically the devil will corner you into sin through your weaknesses, un-surrendered pleasures and disobedience.
Also consider the story of Ananias and Sapphira that were judged instantly by the Lord even though believers. They were judged for their lies to the Holy Spirit, greed and deception. Acts 5: 1-11. 
Lastly we can look at the story of Judas Iscariot where he was beguiled by Satan as the enemy took advantage of his greed and lack of loyalty to Jesus. Mark 14:44-46, John 18:1-13, Matthew 27:5, Acts 1:18.