It was not leaked by the IRS. Look at the signature block on page 2 near the bottom. It is stamped "Client Copy". And, while the name and address of the preparer are blacked out, the signature block for the preparer is not signed and is not blacked out. Mine are like this every year.
A return actually filed with the IRS would have DJT's signature, Melania's signature, and the preparer's signature.
There may not even have been one filed with the IRS, it may have been done electronically.
This one could be from DJT's files, from the preparer's files, or he may have included it with a loan application, but it did not come from the IRS.
Endless tons of people have access that make $10/hr, in India too, that have access to this stuff. All your returns/bank statements/credit card info is available to basically min wage workers all over the world.
When Rachel Maddow first reported on this 2005 tax return a couple of years ago, someone mentioned that the return was mailed to MSNBC in an envelope with a postmark from the U.S. post office near Trump Tower. LOL.