Is iCloud (notes) secure enough for personal info?

I put these in secure notes in my keychain. No syncing, but password required to get at them.

Trance said:

I used to carry around a pocket tablet with a list of passwords and credit card numbers to get to on the ease when i'm shopping online.
Since notice now sync to all my devices I would love to toss out the pad and write all my notes digitally, but I am worried that icloud maybe hacked and all my personal info could be compromised.

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While nothing is impossible, I'd say that iCloud being hacked is less likely than you having your tablet or device stolen and the information accessed that way.

Trance said:

I used to carry around a pocket tablet with a list of passwords and credit card numbers to get to on the ease when i'm shopping online.
Since notice now sync to all my devices I would love to toss out the pad and write all my notes digitally, but I am worried that icloud maybe hacked and all my personal info could be compromised.

Click to expand...

Your iCloud info should be pretty safe as long as you are using a decent password to secure it.
The recent issue with Apple involved Apple Care resetting the password without the user's consent. The password was not compromised so it is a different issue.
http://www.wired.com/gadgetlab/2012/08/apple-amazon-mat-honan-hacking/

I wouldn't store stuff like credit card numbers in plain text in a cloud syncing notes app, no matter how strong I felt my passwords were.

I'd invest in 1Password to store all your sensitive stuff securely: https://agilebits.com/onepassword

It's just as convenient as using a notes app, arguably more so, since it's designed for this, and won't allow people to just see your deets in the event of a theft.

I'm fairly sure the answer is that they are not secure. As indicated by the Apple support note below, email and notes are not encrypted on their servers. Everything else is encrypted on their servers with at least AES-128.

I don't think that has changed with notes in Mountain Lion but I haven't seen updated information on it. Since Notes remains backwards-compatible, I would think it is still stored in IMAP as before.

https://support.apple.com/kb/HT4865