A relatives wife who does not speak to my family at all took a shirt from my brothers suitcase when he was visiting relatives overseas at the same time as she was, they were staying in the same house.
She also took a hijab i forgot in my grandmothers room.
My grandmother found both these items in this womans possession and realized all the bad things he and i had been going through for nearly 2 years were because of her. It is a well known fact in our family that she goes to tarot card readings, fortune tellers and black magic folk.
The imam told us which surahs to recite and a few other things.
But, you dont have to go to an imam, you can recite the surahs listed in here as well as making sure you pray and perform wudu. Salat and wudu in my opinion are protectors from many things.
Word to the wise, dont let people roam around your house freely, keep an eye out for any odd behaviour and people taking ANYTHING from your home without your permission, even a flower. The imam told us that even someone taking a flower from your home can bring you harm if they take it to someone who does black magic. Playing Surah Baqarah can help protect you from that.
Also, when having large gatherings in your homes, its not a bad idea to check around the home as you clean for any "talismans."
Those are common also. A friend of mine had a big dinner at her home and a few days later she was cleaning and found a "hajmali" (a type of talismen that has something writing on paper then wrapped with cloth) hidden behind a flower pot. When she opened it there were little bones and hairs and pins inside.
So be very aware of your surroundings and your home and always keep an eye open.