Swift, 24, said men tried to kidnap, kill and marry her and such incidents have made her extra cautious about the issue of security, reported Us magazine.
"I fought the idea of having security for a very long time, because I really value normalcy. I really do. I like to be able to take a drive by myself. Haven't done that in six years.
"They have to be in a car behind me. Because just the sheer number of men we have in a file who have showed up at my house, showed up at my mom's house, threatened to either kill me, kidnap me, or marry me," she said.
Earlier this year, Swift obtained a restraining order against one such man. A stalker named Timothy Sweet reportedly believed he was married to Swift and wrote threatening messages on social media.
"This is the strange and sad part of my life that I try not to think about. I try to be lighthearted about it, because I don't ever want to be scared. I don't want to be walking down the street scared. And when I have security, I don't have to be scare," Grammy-winning singer added.