"Science" circle of friends can leak so much privacy?This feature must be known

Recently, the topic of "hair or exposing privacy" rushed to Weibo hot search. When you send the original picture in WeChat and emails, you will send photos and photos information together, and anyone can read it. So, how much privacy can a photo be exposed? How does this information generate? Photography/Ning Ying's privacy information is hidden in the original picture of each digital photo recorded in our daily life with mobile phones or cameras. It has its own "DNA", that is, the ExiF parameter (ExiF). EXIF mainly includes all kinds of information related to photography conditions such as aperture, shutter, ISO, time, and location at the time, camera brand models, color codes, sound recorded during shooting, and global positioning system (GPS). Simply put, it is like the date printing function of a fool camera, but the information recorded by EXIF ​​information is more detailed and complete. When you send the original picture to others, the information attached to the information will be sent out together. Although a photo can only indicate that the photographer arrives at a certain place at a certain time, if the content of the shooting is at home or often, strangers can analyze the floors and even the house number through the shooting time and angle. If the subject is a person, more information may be leaked. As the clarity of photos is getting higher and higher, we can see more details from the photos. There are real cases that the fingerprints of the fingers can be seen from the uploaded photos, and even the image reflected from the pupils. There are even special websites to help users check the information in the photo. When the other party receives the original picture, save the picture and select "Show on the map" to display the geographical location of the picture. In addition to shooting geographical location, it will also display information such as shooting time, model, exposure parameters. Among the most critical GPS related information, after using the latitude and longitude format conversion tool, you can find the accurate shooting location of the photo on the map. For Apple mobile phones, a "photo" application of iOS 15 adds a hidden update. Users can directly view the EXIF ​​information of the photo without downloading third -party applications. This interface shows the EXIF ​​information containing photos format, lens, sensitivity ISO, lens physical focus, EV (Exposure Values) exposure, aperture, shutter and other information, and users can also add shooting time and location in the interface. In the figure above, when the star logo appears in the lower right corner, a similar picture can be found on the Internet. From the perspective of the entire process, a key link that exposes or leaked privacy due to the content of the shooting is "image intelligence analysis". In endless typical cases, relevant personnel can often analyze the location of the photographer through various information such as buildings, logos, and angles in the photos, and some can even accurately reach the specific floor where the photographer is located. Based on this, combined with information such as the shooting time in the photo file, the situation of privacy leakage will still cause privacy leakage. However, only the original picture has GPS and other related information. At present, many software default compression pictures will erase the relevant information. For example, the photos posted in the WeChat circle of friends are compressed by the system, and information cannot be seen even if others download the collection. If you are really worried, you can avoid sending the original map or closing the positioning. At present, the camera programs of Huawei and Xiaomi Android phones all provide switches that turn off automatic recorded geographical information. When the "Record and Save Geographical Location Information" is turned off, the mobile phone will not be able to use the product function in the photo album to screen and view the product function of the photo stream according to the shooting location. "In this way, there will be no geographical information in the original document of the photo, but the shooting time and equipment logo will still exist." Said Pan Bowen Pan Bowen, a senior security expert in Antian Mobile. Personal privacy security awareness is more important to turn off the risks of automatic recording geographical location, compression pictures, etc., which cannot completely eliminate the risk of leakage of privacy, and personal privacy security awareness is also important. According to "China News Weekly", similar cases are not uncommon. In 2017, Liu, a resident of Geely Changchun, was robbed at home. After the police detected, the police found that the robber was his husband's WeChat friend. So he came into the idea of ​​entering the room. For another example, a mother may be shared on the social platform just after taking a photo of the child, and has not set up private access or restrictions. At this time, strangers can use the "near" sharing state function provided by the social platform, access and view The message just shared by this mother. Then, even if the photo itself does not have location information, it will also cause the risk of personal privacy leakage. If you shoot a landscape map and send the original picture to the group chat at home, it is equivalent to publishing your own GPS location data to all strangers. Floor and house number, which contains a lot of hidden safety hazards. In addition, many netizens also mentioned that if they are more scissors when taking pictures, it is likely to leak fingerprint information, and the consequences may be more serious. Therefore When sharing, remember to apply the fingerprint to use the relevant tools.

How to avoid the leakage of the original information? 1. Turn off the location of the camera's location information. Open the album before sharing, click the "Share button" in the lower left corner, and after the sharing interface pops up, click the "location" option at the top to cancel the default opening. The pictures subsequent will not include location information. 2. Do not easily send the original map to the stranger on the circle of friends or Weibo. Because it will be deleted by the server, the relevant information will be deleted, so it is relatively safe, but do not easily send the original picture to strangers! 3. Do not add unknown friends in WeChat "Setting-Privacy", set up "When adding me to a friend" to open it, to prevent it from being added as a friend by strangers. Senior. 4. "Differential treatments" strangers believe that everyone should be accustomed to setting up a circle of friends for the WeChat friends who are used to the "A". "Settings-Privacy" Turn off the "Allow Strangers to View Ten Photos" function. 5. Setting in groups Most people setting up groups are mostly avoiding their parents or colleagues, and ignore strangers who really need to "avoid". If you are not troublesome, you can set the grouping and publish information. 6. I told strangers that we are lying on the WeChat list of everyone who are lying on the WeChat list. 7. Learn to play mosaic ID cards, passports, air tickets, train tickets, license plate numbers and other important personal information. It is recommended not to expose it. Remember to play mosaic if you are indispensable. Although netizens boo the Internet in the era of big data, the Internet has no privacy. But when others touch the legal bottom line, you are protected, and you take the initiative to share your personal information to become "willing to fight and one willingness". In the process of photo sharing, if you find the privacy information of others, you must also cultivate a mosaic consciousness to avoid causing legal disputes. END Source: China Well -off. Author: Fenghua Review: Gong Zimo Vision: Long Hao's attention to "Scientific Power" is the best decision you made today!

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