Photos from Twitter "spoke" in the hands of hackers


    And not always what a photograph can “say” will be pleasant to its owner. In general, we will talk about a long-pressing problem - the carelessness of Internet users and the leak of personal information. The fact is that a large number of new cellular models are equipped with a geotagging function, and somehow very few people who understand the potential danger of this function. At a conference of Next HOPE hackers yesterday, one of the participants said that he analyzed more than 2.5 million photos posted by users of the Twitter service, and more than 65 thousand of them were marked with coordinates.

    It seems that the person who buys a modern cell phone should understand that the geotagging function is designed to show our current location. As it turned out, most owners of mobile devices with this feature do not even think about the potential danger of leakage of personal information.

    How it works? Yes, it’s very simple, when receiving a snapshot, the cell receives the coordinates of the user's current location and adds this data to the EXIF ​​metadata of the snapshot. At the same time, we all know what kind of pictures are posted by Twitter users. Some post very personal photos, wanting to remain anonymous.

    It sounds funny, but the same hacker from the conference showed a picture of a man who is an anonymous Twitter user. The picture can not be called "family" or "respectable." At the same time, the hacker was able to determine the address, phone number and name of this man from the image. As it turned out, he even has a wife who is unlikely to be pleased with such "creativity".

    In general, one can talk about recklessness and stupidity forever, and the hacker did not begin to spread about this topic for a long time. In return, he introduced the resource he created , which analyzes snapshots from the main page of The nickname of the user is displayed next to the thumbnail of the image, plus information about the current location of that user. In such a simple way it is shown how many more careless people who do not even suspect that their photos are simply shouting "I'm in such and such a place."

    The service even converts coordinates into addresses, street and city names (if possible, of course). The service is based on a cunning Perl script.

    The purpose of the site, according to its creator, is “to scare users”, to make them think and make a decision - is it necessary that anyone can find out where you are at the moment. After all, disabling the geotagging function is so simple, but few do it, even if it fears the leak of such information.

    It is clear that the method of determining coordinates by image metadata has long been not news for most members of the habrasociety (if it was ever news at all). I just wanted to demonstrate an interesting service and once again warn that smoking is harmful, be careful!

    Here is the source .

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