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#21
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How much EXIF information is tracked by photo sharing sites?
Usenet Account:
In Photoshop if you use "Save for web" the EXIF is stripped, if you use "save as" it's kept. Not so, at least for recent versions of Photoshop. In CS6, CC, and CC 2014, saving metadata is an option in the "Save for Web" dialog. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
#22
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How much EXIF information is tracked by photo sharing sites?
On 28/10/2014 16:54, A. Beck. wrote:
How much EXIF information is tracked by photo sharing sites? http://regex.info/exif.cgi I often post photos to photo-sharing sites, whether for the purpose of social networking (pinterest, facebook, etc) or for Usenet posts (tinypic, flickr, etc) or for personal sharing (iCloud, dropbox, google drive, etc). The EXIF, as you know, can reveal exactly where and when the photo was taken, and even what camera was used, and, of course, the time and date, etc, the combination of which could easily reveal intensely personal information. You have to assume that any metadata like EXIF or text you post into the internet will be scanned by malevolent agents now or in the future. Basically if you are worried strip the EXIF data off and/or resample the image down to a smaller size and watermark it. That way when someone attempts to use your copyright images without permission you can if necessary stamp on them. I have only done it a couple of times. Normally I will grant permission and provide the full resolution image on condition that I get a copy of the book that is using it. It is madness to make the full resolution of a valuable image available free. When I DOWNLOAD those pictures, generally (always?) the EXIF information seems to be stripped out. And probably resampled and compressed to a standard canonical JPEG encoding as opposed to the custom qtables out of the camera. But ... how much of that personal EXIF information is retained by the web site (and used for their possibly nefarious purposes)? Probably all of it so be careful what you upload. Also read the small print very carefully many of these photo "sharing" sites will lay claim to them gaining your image copyright hidden in their terms of use. Same sort of issues with facebook etc where people often provide enough information to allow thieves to target empty houses whilst the owners are mindlessly tweeting and facebooking their holiday snaps. -- Regards, Martin Brown |
#23
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How much EXIF information is tracked by photo sharing sites?
A. Beck:
If I snap a picture of a pink flower in the open-air foyer at the AIDS clinic while I'm supposed to be at work, and the EXIF information shows almost exactly when & where I was, that's (by it's very revealing nature) certainly intensely personal information (it's meta-information but intensely revealing nonetheless). How so? By your presence there you have revealed this "intensely personal information" to your co-workers, your clients, and passers-by who may have seen you enter the parking lot in the morning. Your bank, the IRS, the SSA, and various county or parish and state and local agencies know where you work. Medical insurance companies know where you work. Your friends, family, and neighbors are likely to know where you work. People talk, they share information in person and on the Internet. But once more--as pointed out in this thread, there are a number of ways to keep your affair with the flower secret. The best is to not photograph the flower. Second is to not share the photograph, but, of course, the camera or camera phone with which you made the photo could be stolen with EXIF and other revealing information intact. Best not to photograph the flower or anything else. Get rid of all cameras that can record EXIF. Keep your photos to yourself. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
#24
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How much EXIF information is tracked by photo sharing sites?
A. Beck:
But, the purpose of asking here was to figure out if there are any known cases where the web site made use of the EXIF information. Yes. Flickr displays it on demand if it is included with the photo. Certainly if you know of a picture-sharing site that *keeps* the EXIF information intact, that would be immensely informative. That's the idea. Many people, including me, need to make that information available to persons who view their photos. This is the Information Age, not the Dark Age. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
#25
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How much EXIF information is tracked by photo sharing sites?
On 2014-10-28 21:48:48 +0000, Davoud said:
A. Beck: If I snap a picture of a pink flower in the open-air foyer at the AIDS clinic while I'm supposed to be at work, and the EXIF information shows almost exactly when & where I was, that's (by it's very revealing nature) certainly intensely personal information (it's meta-information but intensely revealing nonetheless). How so? By your presence there you have revealed this "intensely personal information" to your co-workers, your clients, and passers-by who may have seen you enter the parking lot in the morning. Your bank, the IRS, the SSA, and various county or parish and state and local agencies know where you work. Medical insurance companies know where you work. Your friends, family, and neighbors are likely to know where you work. People talk, they share information in person and on the Internet. But once more--as pointed out in this thread, there are a number of ways to keep your affair with the flower secret. The best is to not photograph the flower. Second is to not share the photograph, but, of course, the camera or camera phone with which you made the photo could be stolen with EXIF and other revealing information intact. Best not to photograph the flower or anything else. Get rid of all cameras that can record EXIF. Keep your photos to yourself. There is just a tad too much paranoia to this. I usually retain full EXIF data and for many shots I retain GPS Geo tagged location information as that gives me another sort criterium, and can provide some interesting data for those I share images with. So if you open this image and check the EXIF, you will find a whole bunch of information in the EXIF metadata including location data for the 1200+ shots I took that particular day. https://dl.dropboxusercontent.com/u/1295663/Shared%20Images/Automotive/DNC4947-Edit-1.jpg ....and the location from the Lightroom Map Module. https://dl.dropbox.com/u/1295663/FileChute/screenshot_998.jpg ....and if you want really detailed EXIF data go to http://regex.info/exif.cgi and enter the image Dropbox URL to see just how much more info is in that EXIF data. Just to make that easier for you this should take you right there. http://regex.info/exif.cgi?imgurl=https%3A%2F%2Fdl.dropboxuserconten t.com%2Fu%2F1295663%2FShared%2520Images%2FAutomoti ve%2FDNC4947-Edit-1.jpg http://tinyurl.com/out359m If there is an image I am truly concerned with, I will strip the metadata before sharing, but I am not particularly paranoid. -- Regards, Savageduck |
#26
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How much EXIF information is tracked by photo sharing sites?
Savageduck:
If there is an image I am truly concerned with, I will strip the metadata before sharing, but I am not particularly paranoid. Nor am I. I label my photos on Facebook and in Flickr with "Made at Gambrills, Maryland, on DD MMM YYYY." Or other location, as appropriate. Try to imagine the National Geographic or a newspaper publishing photos in isolation, not saying where or when they were taken. That would render most of the photos entirely useless. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
#27
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How much EXIF information is tracked by photo sharing sites?
Martin Brown:
You have to assume that any metadata like EXIF or text you post into the internet will be scanned by malevolent agents now or in the future. Who are these malevolent agents? Why would they care that I made this photograph of a butterfly https://www.flickr.com/photos/primeval/15335834362/in/photostream at my home at 39°04'40.61" N 76° 39' 33.46" W? Is that information useful to ISIS? CIA? NSA? FBI? All three agencies are nearby, and they all know where I live. So? -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
#28
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How much EXIF information is tracked by photo sharing sites?
On 2014-10-28, Davoud wrote:
Savageduck: If there is an image I am truly concerned with, I will strip the metadata before sharing, but I am not particularly paranoid. Nor am I. I label my photos on Facebook and in Flickr with "Made at Gambrills, Maryland, on DD MMM YYYY." Or other location, as appropriate. Try to imagine the National Geographic or a newspaper publishing photos in isolation, not saying where or when they were taken. That would render most of the photos entirely useless. Yes, but then you are not National Geographic, or even a newspaper. Even they do not publish all the photos they take. |
#29
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How much EXIF information is tracked by photo sharing sites?
On 2014.10.28, 12:54 , A. Beck. wrote:
How much EXIF information is tracked by photo sharing sites? http://regex.info/exif.cgi I often post photos to photo-sharing sites, whether for the purpose of social networking (pinterest, facebook, etc) or for Usenet posts (tinypic, flickr, etc) or for personal sharing (iCloud, dropbox, google drive, etc). The EXIF, as you know, can reveal exactly where and when the photo was taken, and even what camera was used, and, of course, the time and date, etc, the combination of which could easily reveal intensely personal information. When I DOWNLOAD those pictures, generally (always?) the EXIF information seems to be stripped out. Get Exiftool and search the web for the best commands to clean out images in batches. -- Among Broad Outlines, conception is far more pleasurable than “carrying [the children] to fruition.” Sadly, “there’s a high infant mortality rate among Broad Outlines—they often fall prey to Nonstarters.” "Bestiary of Intelligence Writing" - CIA |
#30
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How much EXIF information is tracked by photo sharing sites?
In article ,
"A. Beck." wrote: How much EXIF information is tracked by photo sharing sites? http://regex.info/exif.cgi I often post photos to photo-sharing sites, whether for the purpose of social networking (pinterest, facebook, etc) or for Usenet posts (tinypic, flickr, etc) or for personal sharing (iCloud, dropbox, google drive, etc). The EXIF, as you know, can reveal exactly where and when the photo was taken, and even what camera was used, and, of course, the time and date, etc, the combination of which could easily reveal intensely personal information. When I DOWNLOAD those pictures, generally (always?) the EXIF information seems to be stripped out. But ... how much of that personal EXIF information is retained by the web site (and used for their possibly nefarious purposes)? The *ONLY* safe assumption you can make on that is that they'll collect and use *EVERY SCRAP OF INFO THEY CAN GET THEIR HANDS ON*, no matter how private, trivial, crucial, or otherwise. If you hand them info, knowingly or not, they're going to use it. Period. -- Security provided by Mssrs Smith and/or Wesson. Brought to you by the letter Q |
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