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A web beacon is any of several techniques used to track who is visiting a web page. They can also be used to see if an email was read or forwarded or if a web page was copied to another website. [7] The first web beacons were small digital image files that were embedded in a web page or email. The image could be as small as a single pixel (a ...
For the prefix "Stego-" as used in taxonomy, see List of commonly used taxonomic affixes. The same image viewed by white, blue, green, and red lights reveals different hidden numbers. Steganography ( / ˌstɛɡəˈnɒɡrəfi / ⓘ STEG-ə-NOG-rə-fee) is the practice of representing information within another message or physical object, in such ...
Ghost hunting is the process of investigating locations that are purportedly haunted by ghosts. The practice has been heavily criticized for its dismissal of the scientific method. No scientific study has ever been able to confirm the existence of ghosts.
Spy pixels or tracker pixels are hyperlinks to remote image files in HTML email messages that have the effect of spying on the person reading the email if the image is downloaded. [1] [2] They are commonly embedded in the HTML of an email as small, imperceptible, transparent graphic files. [3] Spy pixels are commonly used in marketing, and ...
Cellphone surveillance. Diagram showing the operation of a StingRay device for cellphone surveillance. Cellphone surveillance (also known as cellphone spying) may involve tracking, bugging, monitoring, eavesdropping, and recording conversations and text messages on mobile phones. [1] It also encompasses the monitoring of people's movements ...
The AOL mobile app for Apple iOS and Android gives you organized and secure email, breaking news, premium videos, weather and more.
Facebook Safety Check (sometimes called Facebook Crisis Response) is a feature managed by the social networking company Facebook. The feature is activated by the company during natural or man-made disasters and terror-related incidents to quickly determine whether people in the affected geographical area are safe.
Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as not controlled by who is aiming to implement a VPN) or need to be isolated (thus making the lower network invisible or ...