I really do respect Apple's attention to security and privacy, however I was a little disappointed when I came across an Apple ID leak from their login form [0] last week. They patched a fix a couple days after I reported it, but still haven't responded to my initial report. It's quite concerning given how easy this simple flaw could have been used for malicious purposes to potentially collect millions of Apple ID's.
[0] https://github.com/zaytoun/Apple-ID-Data-Leak