Could Jailbreak be responsible for odd Shazam problem?

[flamingkitties]

I've started to see someone else's tags showing up for Shazam enquiries on my Shazam account online - and in the email they send to tell you what you've tagged recently.

These tags aren't mine, they don't show up on the app on my phone as I didn't tag them.

The only change I've made to my phone recently is a jailbreak, could that somehow be the problem?

I can't see why someone would use my login details to use it, Shazam is free to use once the app's paid for.