SilverPush
Silverpush is a Singapore based marketing technology solutions provider. The company was founded in September 2012, by Hitesh Chawla. After starting push notification advertisement in 2013, it launched India's first DSP platform in 2014. The company is backed by IDG Ventures, Palaash Ventures, Fabrice Grinda, K.Ganesh, 500 Startups, M&S Partners and Freak Out Inc, Japan. Silverpush's in-video context detection platform uses artificial intelligence and computer vision to accurately identify in-video contexts, including logos, faces, objects, actions, and scenes, to enable contextual video ad placements in line with content users are actively engaging with. And its  brand safety platform uses in-video context detection to contextually filter out harmful and irrelevant content. Offering brands, a suitable video environment, surpassing traditional measures like keywords blacklist, whitelisted channels and more. Funding. In April 2014, Geektime reported that SilverPush had raised $1.5 million in funding to increase global reach. In February 2019, SilverPush raises $5 million in Series B from FreakOut Holdings. Privacy implications. The use of SilverPush to track users across multiple devices has privacy implications and allows for more detailed tracking of users. Data can be collected from multiple devices used by a single user  and correlated to form a more accurate picture of the person being tracked. In July 2014, TechCrunch reported that SilverPush was using "ultrasonic inaudible sounds" called "audio beacons" along with cookies to reliably track users across multiple devices and that devices with an app containing the SilverPush SDK are constantly listening for audio beacons. In April 2015, SilverPush claimed 67 apps were using its code. In October 2015, the Center for Democracy and Technology submitted comments to the Federal Trade Commission (FTC) regarding SilverPush's cross-device tracking technology. In March 2016, the FTC issued warning letters to 12 app  developers using SilverPush code in their apps. The FTC warned these developers that they may be violating the FTC Act if they state or imply that their apps are not tracking television viewing habits when they in fact are. Shortly after the FTC warning, SilverPush made an official statement that they are ending the Unique Audio Beacon service. However, as of 21 March 2016, SilverPush is still advertising Unique Audio Beacon on their website. In November 2016, researchers from UCL, UCSB and PoliMI demonstrated the security and privacy implications of the ultrasound cross-device tracking (uXDT) technology used by SilverPush . The most notable of their attacks uses uXDT-enabled applications to deanonymize Tor users. In May 2017 SilverPush technology was again the subject of research: "A team of researchers from the Brunswick Technical University in Germany discovered  Android apps that employ ultrasonic tracking beacons to track users and their nearby environment. Their research paper focused on the technology of ultrasound cross-device tracking (uXDT)."