La Cnil alerte sur la géolocalisation des applications smartphones. Une étude de la Cnil et de l’Inria montre que certaines applications sur smartphones font appel à la géolocalisation de façon quasi permanente.
Une application y accède par exemple plusieurs fois par minute. Et si les applis nous géolocalisaient à outrance ? La Commission nationale de l'informatique (Cnil) et des libertés et l'Institut national de recherche en informatique et en automatique (Inria) lancent un avertissement dans une étude publiée ce lundi. Le pistage des utilisateurs de smartphones n’est pas souvent justifié. Entre un quart et un tiers des applications téléchargées sous iOS et Android ont eu accès à la géolocalisation selon l’étude qui a duré trois mois. Des données revendues Geoffrey Delcroix, chargé d'études à la Cnil, estime que ce pistage peut provenir d'une "mauvaise optimisation des commandes de l'application". Meet Jack. Or, What The Government Could Do With All That Location Data.
By Jay Stanley Dec. 5, 2013 We now know that the NSA is collecting location information en masse.
As we’ve long said, location data is an extremely powerful set of information about people. To flesh out why that is true, here is the kind of future memo that we fear may someday soon be uncovered: UPDATE: Watch the video version of this piece here. Dear commissioner: Now that we have finalized our systems for the acquisition and processing of Americans’ location data (using data from cell phone and license plate readers as well as other sources), I wanted to give you a quick taste of our new system’s capabilities in the domestic policing context. As you can see in this screen shot from our new application, an individual by the name of Jack R.
First, before we look into that alert, the system lets us quickly access a variety of background information about our subject. A sense of the subject’s movements over time can also be graphically displayed: Or as a heat map: Looks like Mr. For Mr. Web privacy: How online photos reveal more than you know News. The geotagging data contained in many mobile phone images can let strangers know exactly where you are and what you've been up to.
We find out just why you should be careful when posting digital snaps online. ICanStalkU.com To highlight geotagging-related privacy issues, Jackson and Larry Pesce, a colleague, adopted the Twitter username ICanStalkU to respond to tweeters who posted geotagged images. Twitter shut down the account but let Jackson back in after he argued for the need to educate users. He has also started a website called ICanStalkU.com to get his message out.
ICanStalkU uses a Perl script to scrape some 20,000 images each day off of MobyPicture, SexyPeek, Twitter, and Yfrog. Another site, PleaseRobMe.com (now shut down), used data from Foursquare and Twitter to emphasise the abundance of personal data being posted online. In his New HOPE security conference presentation, Jackson detailed how he found personal details about a man in a photo. Phone-specific remedies. Photos You Post Online Can Give Away Your Location. What Your Digital Photos Reveal About You. The moment is special: Your kid just learned how to ride a bike without training wheels.
So you fire up your iPhone's camera, snap a photograph, upload the image to TwitPic, and share the evidence of your child's triumph via Twitter. When you post the picture, a subset of the 75 million Twitter users will know the exact location of you and your child. Digital photos automatically store a wealth of information--known as EXIF data--produced by the camera. Most of the data is harmless, but as Mayhemic Labs' Ben Jackson noted at the Next HOPE security conference in New York last July, about 3 percent of all photos posted on Twitter contain location data, and that figure is growing.
Anyone on the Web who can read the data knows where the photographer was standing. EXIF Data and Geotagging Created by the Japan Electronic Industries Development Association (JEIDA), the Exchangeable Image File format (EXIF) specification adds metadata to common JPG and TIFF image files.