Earlier this week, we all had a bit of deja vu when it was revealed that some new Sony hardware used questionable tactics to hide software. Sony has now commented on what F-Secure and others have reported, regarding their Micro Vault drive hiding files and causing some A/V suites to ignore them.

Sony Sweden is claiming that this functionality was unintentional, and that no harm was intended:

Sony Sweden representative Fredrik Fagerstedt told local press this week that sometimes even actions undertaken with "good will" can go wrong.
Of course they are going to say that, but this is not the first time Sony has used poor judgment when developing software. They may claim they are doing this all for “good will”, but who's good is it for?

What really seems odd is how functionality like this can be "unintentional". It seems it would take a very deliberate piece of code.