[amenod]

Why "security problem"? The wording is telling:

> ...for various reasons, including security concerns.

Security is just a red herring.

Who wins with this move? The cynic in me (who is usually annoyingly right) says Google. Mozilla loses even more trust from its users and Firefox now has a tool to disable ad blockers on websites of their biggest competitor^Wsponsor if they reach a suitable mutual agreement (read: G pays enough for it). Win-win for all the parties that have a say in this. Not users of course, but that's life.

[JohnFen]

> ...for various reasons, including security concerns.

Yes, this is what got my spidey-sense tingling, too.