![]() When you wear big glasses and the lighting around you is very unfavorable you might even see objects around you in the blue or green color of the reflection on your glasses. The more lens surface you have in front of your eyes the more reflections are theoretically possible. In the end, it is worth noting that people wearing oversized glasses will notice reflections more than people with smaller glasses. The engineer of the anti-reflective coating needs to decide whether to choose blue, green, or even another color of the remaining reflections on the lenses. When anti-reflective coatings are engineered it is currently not possible to block out all the light. Depending on the angle someone standing in front of you your eyes could be covered by the blue or green reflections depending on the light sources around you. Usually, those effects are blue and green mirror effects on the lens surface of your glasses are rarely noticeable for you. Usually, those reflections are easily visible to you when you hold your glasses in your hands and turn them around a little so a light source can like a lamp gets mirrored on the lens surface. The better the quality of the anti-reflective coating is the fewer reflections you can notice wearing the lenses. Depending on the manufacturer the color will be more tuned to a dark green or a dark blue. This colored reflection is also known as the bloom. The Python code can be found on GitHub.The green or blue reflection on your glasses is the color of the remaining 1% reflection on the lenses of your glasses the anti-reflective coating could not eliminate. "The prototype program locates the eyeglass area and applies a Gaussian filter to blur the area." "Although none of the platforms supports it now, we have implemented a real-time eyeglass blurring prototype that can inject a modified video stream into the video conferencing software," they explain. The researchers argue other more usable software-based defenses involve targeted blurring of eyeglass lenses. With regard to potential mitigations, the boffins say that Zoom already provides a video filter in its Background and Effects settings menu that consists of reflection-blocking opaque cartoon glasses. ![]() Consequently, not every glasses-wearing person will necessarily provide adversaries with reflected screen sharing. These include reflectance based on the meeting participant's skin color, environmental light intensity, screen brightness, the contrast of the text with the webpage or application background, and the characteristics of eyeglass lenses. ![]() "It would be interesting for future research to scrape online videos such as from YouTube and analyze how much information is leaked through glasses in the videos," he said.Ī variety of factors can affect the legibility of text reflected in a video conference participant's glasses. He said the attack envisions both adversaries participating in conferencing sessions and also those who obtain and play back recorded meetings. bosses monitoring what their subordinates are browsing in a video work meeting, to business and trading scenarios where the reflections might leak key negotiation-related information," said Long. "We believe the possible applications of this attack range from causing discomforts in daily activities, e.g. When the goal was to identify just the specific website visible on the screen of a video meeting participant from an eyeglass reflection, the success rate rose to 94 percent among the Alexa top 100 websites. Older AMD, Intel chips vulnerable to data-leaking 'Retbleed' Spectre variant.Hidden Linux kernel security fixes spotted before release – by using developer chatter as a side channel.JavaScript tells all, which turns out not to be so great for privacy: Side-channel leaks can be exploited to follow you around the interweb.The opsec blunders that landed a Russian politician's fraudster son in the clink for 27 years."We found future 4k cameras will be able to peek at most header texts on almost all websites and some text documents," said Long. But this technique is expected to provide access to smaller font sizes as high-resolution webcams become more common. "Such font sizes can mostly be found in slide presentations and the headings/titles of some websites (for example, 'We saved you a seat in chat' on )."īeing able to read reflected headline-size text isn't quite the privacy and security problem of being able to read smaller 9 to 12 pt fonts.
0 Comments
Leave a Reply. |