There are two sets of clues that can give away important personal information in your photos. Consider: is there a window in your photos, and are there identifiable buildings or landmarks outside of it?

Were your photos taken in an apartment building or dorm that can be easily identified in other people’s photos?

If you post data which compromises your privacy or reputation to your profile, remove it and consider starting fresh with an entirely new profile.

If that professional headshot is still in a cache associated with your dating profile, he or she can use Tineye to match it to your corporate bio that shares the same photograph.

If you’ve changed your username, he or she may be able to find the previous version.

You realized a few days later that it was too much of a privacy give-away, and made the wise choice to switch to a new photo. Search engines and archive sites are continually indexing as much content as they can from the internet.

These sites retain cached copies of images and pages long after they are changed or erased at the original source.

I highly recommend reading this eye-opening blog on the subject by IOActive.

Give some thought to what people can see in your photos’ backgrounds before posting them to your private dating profile.

You can’t see EXIF metadata without using special tools, but it may contain startling amounts of information about where the photo was taken, by whom, and when.

This exists primarily to help out professional photographers and photo storage tools. Let’s look at some of the data hidden inside of it: Create Date : 20 Make : Samsung Orientation : Horizontal (normal) Flash : No Flash Focal Length : 4.3 mm GPS Position : 28 deg 21′ 27.100″ N, 81 deg 33′ 29.71″ W Even with location geotagging disabled in your camera settings, metadata still provides a tremendous amount of detail about you and your devices, and can even uniquely identify photos taken with your camera.

A single mistake made months earlier can haunt you.

Let’s imagine that before reading this article you uploaded your professional headshot to your dating site profile.

performs a broader sweep of services for usernames only, immediately flagging services where a particular username has been registered.