The 41-year-old reality star - who has 300 million Instagram followers on her main account, likes to keep tabs on her friends and fan accounts using the secondary account and has also used her friend's 'finsta'(fake Instagram account).
Talking to host Amanda Hirsch on the Not Skinny But Not Fat podcast, the mom of four confessed to following Amanda on her finsta account.
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She said: "I used to follow you from my finsta, and then I was like, 'I don't go to my finsta that often and just want it on my regular feed.'
"I had a finsta, that was like a real finsta, and it was only following girls who would just post like really wild s***, and I was like, 'This is so lame, I don't want to be in the finsta game.'
"But then I need a stalking finsta, and so my friend Lala, she had a finsta, and I don't want to make one again, so I asked 'what is your password,' so I just used her finsta, and I kicked her out of her finsta, and now I just use her's. Just to stalk people, like fan accounts, or fashiony things or just everyone you could possibly think of."
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The reality star dating comedian Pete Davidson previously revealed she rakes in money using the Meta-owned social media app.
Kim claimed she could earn more cash promoting products to her followers than she ever did, starring on her family's former E! reality show, Keeping Up with the Kardashians.
Speaking to David Letterman on his Netflix show My Next Guest Needs No Introduction, she said: "We would not be who we are today without 'KUWTK', and that's why we continue to share our lives. Even if, realistically, we can post something on social media and make more than we do a whole season."
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