@D3C4FF has asked a great and I would like to follow up on that. Basically he had asked whether '[.] an attacker can identify if a CCTV camera is on/operational without direct physical access to the cable/camera[.]'. I was highly impressed by @TildalWave 's, and particularly about disabling cameras: '[.] all you need is a decent pocket/torch size green laser (532 nm) directed for a few seconds directly into their CCD/CMOS sensor.' I remember some 10 years ago kids in my neighborhood had found out that you could 'DoS' the street lights using the same technique (by pointing the laser to a point near the back of the light bulb). May 30, 2017 - Can you find out if a rogue app is accessing your Mac's webcam? A list of applications currently attempting to access your webcam. By running lsof “naked,” or without flags, we would normally get a. Install adobe acrobat mac os x. And remember that built-in Mac webcams will always show their green “in use” light when operational. The script, aptly entitled isightdisabler, blocks access to iSight by temporarily changing the permissions on the driver files that provide apps with access to the camera hardware. Obviously if a hacker compromises your Mac, they could just as easily reenable the driver using this tool, but the point is you want to make it as hard as possible. I figured out that this was because those posts light automatically when it gets dark (meaning lack of light) and as soon as it gets bright (meaning light went inside its sensors) the light would turn off. So I would like to ask: 1 - How does this laser attack apply to cameras? 2 - For which types of cameras does the laser pen attack work against (CCTV Vs. 3 - Is the laser pen attack the only vector against those devices (apart from obvious things like fire, TNT, acid, shooting, etc)? 4 - Why are cameras still vulnerable to it, if at all? 5 - Finally, how can I prevent those type of attacks against my cameras (they are all IP-based)? Just a quick edit for those who (like me) was not sure whether this question was appropriate for the site,. I've experimented with this attack previously. It depends on a few variables. First, the strength in mW of the laser you are using. Second the quality of the camera you are trying to disable. 1 - How does this laser attack apply to cameras? • A laser creates a super bright and focused spot on the CCD (camera sensor). This spot can be bright enough to blind the camera, or strong enough to physically damage the CCD/CMOS sensor of the camera (melting, overloading the circuitry etc). This is the type of image you'll see when a lazer is pointed at your camera: 2 - For which types of cameras does the laser pen attack work against (CCTV Vs. • It doesn't matter. It will work on ALL visible light imaging technologies. This includes film cameras, CCD, CMOS sensors etc. I've tested this with 'prosumer' point and shoot cameras and a wide variety of CCTV cameras. Being IP/CCTV doesn't change the fact that your overloading the light sensing components of the imaging sensor. 3 - Is the laser pen attack the only vector against those devices (apart from obvious things like fire, TNT, acid, shooting, etc)? Another clever one that i've used to success is wearable Infrared LED clothes (usually on a hat).
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