Re: It took TWO YEARS to notice 122 millions in extra payments?
To be honest when reading the story I was looking at the opposite view. I was surprised they noticed and was wondering how they did.
These companies must be dealing with millions of invoices and they would be dealt with by regular accounts assistants and accountants that have a specific procedure to follow. If he knew the procedure and complied with it then he got paid and, crucially, appeared to be a current supplier on their system.
Most audits would be a random sample. There would be a big range of PO and non-PO orders. There'll be a lot of R&D, a lot of sub companies and mergers, loads of hardware purchases, sub contractors. Keep the invoices under the specific limit that needs proper scrutiny from high up and he was unlikely to be noticed.
The one that should have been picked up on was the 'send money to this bank account from now on' request. Even I never accept a written letter or email to request that - I always ring my contact to check that it is correct as it is a fairly rare occurrence and it is prime for faking.