I woke up this morning and saw that someone changed one of the "calendars" in my iCloud account from bright yellow to purple. But I never changed any colors...ever. So, I changed it back this morning, and this afternoon, it's purple again! The other colors ("calendars") remain the same.

What is going on? Is someone hacking my account?

[abbaZaba]

sounds like you got graped by The Grapist

And now two out of my four calendars are changed to a different color. I'll change them back again.

[besson3c]

Funny, one of my calendars changed colors too.

And.reg, it is *far* more likely that there is simply an iCloud/Calendar bug of some sort than it is that your/our accounts have been hacked.

Most "hacking" is just spam bots interested in using an account for spamming or phishing, which can involve defacing/hijacking a website, fooling you into doing stuff, etc. There is far less hacking in terms of trying to obtain sensitive information with the intent to do something illegal with it in comparison to the spam harvesting type stuff, and I would think that there isn't anything of real significant value to the criminal population in most iCloud accounts anyway.

[reader50]

It wasn't me. Stop looking at me.

[Ω]

Originally Posted by reader50 

It wasn't me. Stop looking at me.

Watching you.

Originally Posted by besson3c 

Funny, one of my calendars changed colors too.

And.reg, it is *far* more likely that there is simply an iCloud/Calendar bug of some sort than it is that your/our accounts have been hacked.

Well it's an extremely obnoxious bug...the colors I have set help me to categorize themes and when I change the color back and sometimes 5 seconds later it gets changed on me, again, it can get exhausting.

How long until Apple remedies this? I didn't see any alert on their System Status page.

Apple - Support - System Status

Nada, no problems with iCloud it says.

[besson3c]

Originally Posted by And.reg 

Well it's an extremely obnoxious bug...the colors I have set help me to categorize themes and when I change the color back and sometimes 5 seconds later it gets changed on me, again, it can get exhausting.

How long until Apple remedies this? I didn't see any alert on their System Status page.

Apple - Support - System Status

Nada, no problems with iCloud it says.

That is their system status page, bugs are excluded.

[reader50]

And.reg, it's possible no one has told Apple about this yet. You can use their Feedback page to submit a bug report, describing the problem clearly. The date it first happened on would be helpful, along with any changes you did right before that. Try to give them enough info to recreate the problem.

iCal/Calendars just said: "Upgrading Calendars" when I re-launched, so maybe they found a remedy.

Well it just started happening again... I didn't do anything, other than update my iCloud and have my iPod open...

...which, by the way, doesn't ever actually automatically update, I have to tap Calendar, wait 20 seconds, and then it updates. Why doesn't it just update behind the scenes? (Or... it won't update at all! Until I open Calendars, wait the 20 seconds, then nothing updates, then hit the Home button, then re-open Calendars, then it'll update. Same with Reminders. Why the delay?)

And why are the colors changing on me, again?

Problem remains. I didn't see a place to file a bug report, so I just sent feedback from that form.

Well I just tried the technique that spartan2424 suggested:

https://discussions.apple.com/message/23350924#23350924

This worked. At the end, I imported the "corrupted" categories. The Calendars app asks me if I want to assign the events to my re-created calendars. I select them, for each calendar, and all of my events are recovered.

What a pain. Apple needs to release one more iOS 6.x update.