From the article:

It's also unlikely to get many more glitch or bug fixes unless something significant emerges.

I'd bet that rather than fixing a glaring security hole they'll just stop the online service. It would be way more beneficial at the end of online services' lifetimes (this game is 2 years old, mind you!) to open source or at least publish the server parts of the game.

But that would require laws which benefit the end users and not corporations, as they'll never do it themselves if they're not forced to.