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![[ADT flag]](../images/u/us$adt.gif) image by Randy Young, 16 April 2017
 
image by Randy Young, 16 April 2017
See also:
ADT Security Services is an American corporation that provides residential 
and small business electronic security, fire protection and other related alarm 
monitoring services in 35 countries. It was established on In 1874, 57 district 
telegraph delivery companies affiliated and became "American District Telegraph 
Company". It is the largest security company in the United States and Canada. It 
is headquartered in Boca Raton, Florida. In 1909, Western Union and ADT came 
under the control of American Telephone & Telegraph Company (AT&T) (official 
website: ). In 1987, British company Hawley Goodall bought ADT Security 
Services. As a result Hawley changed its name to ADT Limited. In July 1997 the 
company is purchased by Tyco International in a reverse takeover (by ADT 
Limited). In early 2010, Tyco International announced that it was acquiring 
Brink's Home Security Holdings, (operating as Broadview Security) and was 
merging the company with its ADT brand name. ADT became independent again on 
October 1, 2012. In 2014, it acquired the Canadian company Reliance Protection 
Security Services. In February 2016, the company was acquired by Apollo Global 
Management in a leveraged buyout and also merged with Protection 1.
Sources:
https://www.adt.com/about-adt/history.html and
https://en.wikipedia.org/wiki/The_ADT_Corporation 
Its flag is the 
logo (https://en.wikipedia.org/wiki/The_ADT_Corporation#/media/File:ADT_Security_Services_Logo.svg) 
on a white horizontal flag, as seen here (flag on the right):
http://exithub.com/wp-content/uploads/1024x768xadt.jpg.pagespeed.ic.LCBGb9hmep.jpg 
(source:
http://exithub.com/pe-firm-apollo-global-to-acquire-adt-security-in-7-billion-cash-lbo-deal)
For additional information go to ADT (official website):
http://www.adt.com/ 
Esteban Rivera, 
15 April 2017