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In May 2017, seven series of Hikvision cameras were affected by an improper authentication vulnerability which, if exploited, could allow "a malicious attacker [to] escalat[e] his or her privileges or assum[e] the identity of an authenticated user and [obtain] sensitive data," according to the U.S. Cybersecurity and Infrastructure Security Agency.
VISCA utilizes a serial repeater network configuration to communicate between the PC (device #0) and up to 7 peripherals (#1 through #7). The daisy chain cable configuration means that a message walks the chain until it reaches the target device identified in the data packet. Responses then walk the rest of the way down the chain and back up ...
In 2009, there were an estimated 15,000 CCTV systems in Chicago, many linked to an integrated camera network. [ 93 ] [ 94 ] [ 95 ] New York City's Domain Awareness System has 6,000 video surveillance cameras linked together, [ 96 ] there are over 4,000 cameras on the subway system (although nearly half of them do not work), [ 97 ] and two ...
For these historians cinéma vérité is characterized by the use of the camera to provoke and reveal. Direct cinema, on the other hand, has been seen as more strictly observational. It relies on an agreement among the filmmaker, subjects and audience to act as if the presence of the camera does not substantially alter the recorded event.
Ideational montages link actions with words, and are often used in documentaries. A different positioning of shots conveys different ideas to the viewer. For example, a montage containing a negative theme followed by a positive theme may give the viewer the idea that the positive theme is the main theme of the montage.
Aston & Gaudenzi (2012) argue that in fact interactive documentaries are not the result of a linear evolution of the documentary genre. But a distinct and separate mode of practice that goes beyond simple representation of the real, moving towards one that constructs the real through an immersive and enacted user experience.