I mean.. You're making a tool to detect "symptoms" instead of going after the disease itself ( which is fixing your security ).
Well, not exactly. This tool is for keeping me (or anyone) informed about debits and credits without opening a wallet application.
I'm good with my security, as my bank is good with theirs, but they still notify me and I appreciate that.
This tool isn't going to help you majority of the time, because bitcoin is nothing like a bank. You can't "reverse" a transaction. At most you can doublespend and get confirmed earlier, but you'll have to be really, really lucky for that to happen, especially with the current mempool. ( Which is pretty empty, anyone who puts an above average tx fee will get confirmed within the next block...).
Luck increases with being timely informed, doesn't it?