There are photos on my iPhone camera roll that aren't mine. Has my security been compromised? How is this possible?

I had the same situation.

I have a group in Whatsapp and I changed its notification settings to off. And Whatsapp downloads photos automatically when someone sends to me.

When I open Whatsapp it downloaded 3 photos and I realised them after 2 days when I open my camera roll.

Photos can only be added to your camera roll on the phone itself, either by taking the photo on your phone, or by saving it on your phone from an email, website, text message, an app like FaceBook, or saving it to the camera roll from your photo stream album. You may have, for example, been browsing the internet, and saved a photo from a website by mistake; or perhaps someone else did who was using your phone. These photos would have been saved to your camera roll.

You can see what apps have access to your photos by going to Settings>Privacy>Photos. Turning FaceBook on here, for example, allows you to save photos from the FaceBook app to your camera roll.

Unless you have an app that accesses your photos and has the ability to save photos on its own, I don't see how a photo could be saved to your camera roll from an external source. You couldn't do this through iCloud.

I write on this topic because I have an almost same incident.

Back in 2009, and this is important because there was no icloud and photo streams at that time, I found on the camera roll of my iphone 3G photos that do not belong to me!

I try to clarify this, and everybody reacted as I was crazy or had no idea about computers, phones etc. I wrote in a technology forum and got similar reactions. In fact I am a more than average experienced pc and phone user. I could also guarantee that nobody touched my phone.

The only explanation I had is that the photos were transferred through a wireless network in a cafe on my phone through some strange leak. But they were indeed not mine.

There are more than 10 photos of a woman (pretty normal photos, bad quality selfies etc, no naked guys) of a guy making some measurements in an apartment, of an IKEA furtinure (probably for the apartment before) etc. etc. Pretty realistic photos, by no means downloaded from the internet.

And nothing to do with me!

I imported some of them in iPhoto and checked the location. Some of them were taken in Munich (where I live), one (of the new apartment) very close to the cafe I was connected and, interestingly, some (the selfies of the woman) in Palo Alto, CA.

I still do not know what that could be, I still have the photos but unfortunately not the phone anymore.

I would be more than happy to hear that there was this or the other leak at that time, but still haven't found any convincing answer on the internet.

My girl friend and I panicked for a while. Thank you!!