All forms of witchcraft (manipulative control), are regarded by God as idolatry and therefore cursed. This includes any form of paganism such as Druidism, nature worship, New Age practices, white witchcraft, all forms of freemasonry, Christian and other cults, etc.
Adultery, sodomy, polygamy, sex outside of a marriage as God ordained, and all forms of sexual perversion and other sexual sins, and pornography, are liable to be cursed.
“Fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:” (Colossians 3:5)
“Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof.” (Proverbs 18:21)
“With his mouth, the godless man destroys his neighbour but through knowledge shall the just be delivered.” (Proverbs 11:9)
“For rebellion is as the sin of witchcraft and stubbornness is as iniquity and idolatry. Because thou hast rejected the word of the Lord, he hath also rejected thee from being king.” (1 Samuel 15:23)
All forms of unrepentant unforgiveness and revenge, wishing harm to someone, inordinate anger or rage, hatred and any such negative emotions can potentially bring a curse and open doorways or portals.
“For if ye forgive men their trespasses, your heavenly Father will also forgive you: But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.” (Matthew 6:14-15)
“To me belongs vengeance and recompense; their foot shall slide in due time.” (Deuteronomy 32:35)
Violence and all things associated, such as weaponry and martial arts, including movies and video games and online gaming esp. any that don’t glorify God.
“The LORD examines the righteous, but the wicked, those who love violence, he hates with a passion.” (Psalms 11.5)
Anything to do with death cults, such as hell’s angels, skull and skeleton figures, zombies, especially animal sacrifice and blood, or murder, including imagery and paraphernalia, tattoos, costumes or clothing, anything to do with Halloween or horror movies.
Things can be cursed by people too, and some witches of various types and religions and peoples have a propensity for cursing things. For example, many of the Red Indian tribes practised witchcraft and cursed their sacred lands, especially burial grounds. These curses are real and can be deadly.
Places, mountain regions, or lakes, etc. with names including words like ‘hell’, ‘devil’ or ‘death’ have often been found to be dangerous.