I would estimate maybe 1%, .....on jailbroke iPhones. Not much of a story, but thanks anyway for the info.
Let's look at how big or small...
Total iPhone population:
225,000 of 63,000,000 ~= 0.35%
(2014 estimate)
Jailbroken phones total:
225,000 of 630,000 ~= 35% !
Non-Jailbroken phones:
0 of 62,370,000 ~= 0 !
Jailbroken phones that didn't use the Chinese repository:
0 of 450,900 ~= 0 !
Bad day for Cydia and jailbreak community PR-wise at least.
Bad day for jail breakers using questionable repositories.
Everyone else? 100% non-issue, non-story. IMore doesn't pander to FUD.
Those effected can just request refunds (It wouldn't surprise me if Apple honored it even though its 100% each user's risky behavior that allowed it). Or report to CC company (if their CCs have fraud protection in their country)
And then just change their passwords. If it was me, I'd get a replacement CC that was on file. But not a big deal even worst case.