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On November 28, 2011, Whisper Systems announced that it had been acquired by [[Twitter]]. The financial terms of the deal were not disclosed by either company.<ref name="venturebeat1" /> Shortly after the acquisition, Whisper Systems' RedPhone service was made unavailable.<ref name="forbes2" /> Some criticized the removal, arguing that the software was "specifically targeted [to help] people under repressive regimes" and that it left people like the Egyptians in "a dangerous position" during the events of the [[2011 Egyptian revolution]].<ref name="wired2" />
On November 28, 2011, Whisper Systems announced that it had been acquired by [[Twitter]]. The financial terms of the deal were not disclosed by either company.<ref name="venturebeat1" /> Shortly after the acquisition, Whisper Systems' RedPhone service was made unavailable.<ref name="forbes2" /> Some criticized the removal, arguing that the software was "specifically targeted [to help] people under repressive regimes" and that it left people like the Egyptians in "a dangerous position" during the events of the [[2011 Egyptian revolution]].<ref name="wired2" />


Twitter released TextSecure as [[free and open-source software]] under the [[GNU General Public License|GPLv3]] license in December 2011.<ref name="twitter1" /><ref name="whispersys2" /><ref name="wired1"/><ref name="mashable2" /> RedPhone was also released under the same license in July 2012.<ref name="whispersys3" /> Marlinspike later left Twitter and founded [[Open Whisper Systems]],<ref name="wired3">{{cite web| url=http://www.wired.com/2014/07/free-encrypted-calling-finally-comes-to-the-iphone/ |title=Your iPhone Can Finally Make Free, Encrypted Calls |publisher= Wired |author= Andy Greenberg |date= 29 July 2014 |accessdate= 18 January 2015}}</ref> a collaborative [[open source]] project for their continued development.<ref name="welcome" />
Twitter released TextSecure as [[free and open-source software]] under the [[GNU General Public License|GPLv3]] license in December 2011.<ref name="twitter1" /><ref name="whispersys2" /><ref name="wired1"/><ref name="mashable2" /> RedPhone was also released under the same license in July 2012.<ref name="whispersys3" /> Marlinspike later left Twitter and founded [[Open Whisper Systems]].<ref name="wired3">{{cite web| url=http://www.wired.com/2014/07/free-encrypted-calling-finally-comes-to-the-iphone/ |title=Your iPhone Can Finally Make Free, Encrypted Calls |publisher= Wired |author= Andy Greenberg |date= 29 July 2014 |accessdate= 18 January 2015}}</ref><ref name="welcome" />


==See also==
==See also==

Revision as of 23:31, 31 March 2015

This article is about a subsidiary of Twitter. For the open-source software project, see Open Whisper Systems.
Whisper Systems
IndustryEncryption software, Mobile software, Mobile security
Founded2010
FoundersMoxie Marlinspike and Stuart Anderson
DefunctNovember 28, 2011 (2011-11-28)
FateAcquired by Twitter
Headquarters
San Francisco, California
,
U.S.

Whisper Systems was an enterprise mobile security company that was acquired by Twitter in November 2011.[1][2] The company was co-founded by security researcher Moxie Marlinspike and roboticist Stuart Anderson in 2010.[3] Some of Whisper Systems' software was made available under open-source licenses after the acquisition.[4]

History

Security researcher Moxie Marlinspike and roboticist Stuart Anderson co-founded Whisper Systems in 2010.[5][3] In addition to launching TextSecure in May 2010, Whisper Systems produced RedPhone, an application that provides encrypted voice calls.[6] They also developed a firewall and tools for encrypting other forms of data.[3][7]

On November 28, 2011, Whisper Systems announced that it had been acquired by Twitter. The financial terms of the deal were not disclosed by either company.[8] Shortly after the acquisition, Whisper Systems' RedPhone service was made unavailable.[9] Some criticized the removal, arguing that the software was "specifically targeted [to help] people under repressive regimes" and that it left people like the Egyptians in "a dangerous position" during the events of the 2011 Egyptian revolution.[10]

Twitter released TextSecure as free and open-source software under the GPLv3 license in December 2011.[11][12][3][13] RedPhone was also released under the same license in July 2012.[14] Marlinspike later left Twitter and founded Open Whisper Systems.[15][16]

See also

References

  1. ^ Tom Cheredar (November 28, 2011). "Twitter acquires Android security startup Whisper Systems". VentureBeat. Retrieved 2011-12-21.
  2. ^ Brad McCarty (28 November 2011). "Twitter acquires mobile data security gurus Whisper Systems". Retrieved 16 January 2015.
  3. ^ a b c d Garling, Caleb (2011-12-20). "Twitter Open Sources Its Android Moxie | Wired Enterprise". Wired.com. Retrieved 2011-12-21.
  4. ^ Pete Pachal (2011-12-20). "Twitter Takes TextSecure, Texting App for Dissidents, Open Source". Mashable. Retrieved 2014-03-01.
  5. ^ "Company Overview of Whisper Systems Inc". Bloomberg Businessweek. Retrieved 2014-03-04.
  6. ^ Andy Greenberg (2010-05-25). "Android App Aims to Allow Wiretap-Proof Cell Phone Calls". Forbes. Retrieved 2014-02-28.
  7. ^ "Secure your Android mobile – Use Whisper Systems free security app Whispercore « Technology updates by Techburrp". Techburrp.com. Retrieved 2011-12-21.
  8. ^ Tom Cheredar (November 28, 2011). "Twitter acquires Android security startup Whisper Systems". VentureBeat. Retrieved 2011-12-21.
  9. ^ Andy Greenberg (2011-11-28). "Twitter Acquires Moxie Marlinspike's Encryption Startup Whisper Systems". Forbes. Retrieved 2011-12-21.
  10. ^ Garling, Caleb (2011-11-28). "Twitter Buys Some Middle East Moxie | Wired Enterprise". Wired.com. Retrieved 2011-12-21.
  11. ^ Chris Aniszczyk (20 December 2011). "The Whispers Are True". The Twitter Developer Blog. Twitter. Archived from the original on 24 October 2014. Retrieved 22 January 2015.
  12. ^ "TextSecure is now Open Source!". Whisper Systems. 20 December 2011. Archived from the original on 6 January 2012. Retrieved 22 January 2015.
  13. ^ Pete Pachal (2011-12-20). "Twitter Takes TextSecure, Texting App for Dissidents, Open Source". Mashable. Retrieved 2014-03-01.
  14. ^ "RedPhone is now Open Source!". Whisper Systems. 18 July 2012. Archived from the original on 31 July 2012. Retrieved 22 January 2015.
  15. ^ Andy Greenberg (29 July 2014). "Your iPhone Can Finally Make Free, Encrypted Calls". Wired. Retrieved 18 January 2015.
  16. ^ "A New Home". Open Whisper Systems. 2013-01-21. Retrieved 2014-03-01.
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