Like me, you may have panicked to hear of Applestore apps being infectes by a hijacking virus.
Well, it turns our there's a list of the apps so far known to be infected, mainly Chinese, as a result of downloads from a compromised source in China.
PaloAlto Networks has checked out apps listed by others and found 39 so far, including WinZip.
That's how I found one on my own(ed}apps list: PDFReader. Luckily, it wasn't on my device but was still available for download.
Then I discovered there's no way to delete it completely from my purchases. Apple won't allow you unless you jailbreak your iPad. So someone else in the house could easily download it to their machine. Nothing in the Store indicates it has been compromised.
Not so good, Apple.