Discussions have been taking place for a long time about Apple’s deprecation of UDIDs, what options developers have for replacing their use, and what it means for user privacy. Since Apple has now officially announced that developers can no longer use UDIDs as of May 1st, it seemed worth taking a closer look. What I found when looking into Advertising IDs, identifiers for vendors (IDFVs), and the “Limit Ad Tracking” feature that Apple added in iOS 6 was a lot of confusion and misinformation about how all of these things worked. To try and bring some clarity to the issue, I decided to do a detailed write-up on Double Encore’s website. The explanation is geared more toward end users, but I think even more technical folks may gain some insight from it.
A lesson learned a long time ago in the world of desktop computing is that a server can’t trust what a client tells it. If a user goes to log in to your server, your server checks it, you would never leave it up to the client-side application to tell you the user is authenticated because you wouldn’t know if it’s telling the truth. You have control over your server and how it behaves, which is why it should be left in charge of making important decisions, and providing the client with just enough data to execute on those decisions.
Congratulations to all of those who won Appy Awards this year. A very special shout-out to Fandango who somehow won an Appy for Mobile Payments, despite not properly securing customer credit card information. Fandango’s app allows self-signed SSL certificates; combine this with the fact that they transmit all of your credit card details in plaintext (though over an HTTPS connection) when you check ticket availability, and it’s a bit ironic that they would win an award for this category. More than two months after being contacted about these issues, they have yet to respond or do anything to try and secure their customer info. Well done, Fandango.
There was a lot of fuss last week about an alleged iPhone lock screen bug that allowed an attacker to bypass the lock screen and access your iPhoneâ€™s filesystem. I wrote an article on iMore explaining that this wasnâ€™t the case and the confusion seemed to be the result of a misunderstanding on how iPhone passcodes work.
If you’re having problems syncing with Dropbox right now, you’re not alone. Dropbox’s services seem to be experiencing trouble uploading any new files (though viewing existing seems to be working for now). Dropbox’s status page doesn’t give much info, but does report they’re having some technical issues and believe services will be back in the next hour. You can watch for updates on the @DropboxOps Twitter account.
I recently spent some time looking at a number of iPhone apps in the App Store to see how well they were implementing SSL. It was a little surprising to see how many big-name apps ignored SSL errors and even more surprising to see some that didnâ€™t use SSL at all. If you want the short version, head on over to iMore.com. Here I wanted to take some time to take a closer look at the issues that I found and how I found them in hopes that other developers can avoid making the same mistakes.