213:. The financial terms of the deal were not disclosed by either company. The acquisition was done "primarily so that Mr. Marlinspike could help the then-startup improve its security". Shortly after the acquisition, Whisper Systems' RedPhone service was made unavailable. Some criticized the removal, arguing that the software was "specifically targeted people under repressive regimes" and that it left people like the Egyptians in "a dangerous position" during the events of the
235:
as a collaborative Open Source project for the continued development of TextSecure and RedPhone. Open
Whisper Systems consisted of a large community of volunteer Open Source contributors, as well as a small team of dedicated grant-funded developers. In November 2015, Open Whisper Systems merged
293:: An app that integrated with the underlying Android OS to protect everything the user kept on their phone. The initial beta featured full disk encryption, network security tools, encrypted backup, selective permissions, and basic platform management tools for
248:. Today, the Signal app is developed by Signal Messenger LLC, which is funded by the Signal Foundation. The foundation has stated publicly that they are not tied to any major technology companies and "can never be acquired by one either."
836:"We are a 501c3 nonprofit. We're not tied to any major tech companies, and we can never be acquired by one either. Development is supported by grants and donations from Signal users"
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and real-time connection monitoring, giving the user control over where their data was going and what their apps were doing.
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609:"Secure your Android mobile – Use Whisper Systems free security app Whispercore « Technology updates by Techburrp"
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later picked up the development of this open-source software, which led to the creation of the
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was an
American enterprise mobile security company that was co-founded by security researcher
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license in
December 2011. RedPhone was also released under the same license in July 2012.
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enterprise mobile security software. Among these were an encrypted texting program called
8:
1379:
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446:
171:
43:
307:: An app that worked with WhisperCore to provide a software firewall capable of dynamic
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and roboticist Stuart
Anderson co-founded Whisper Systems in 2010. The company produced
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283:: An app that allowed the user to store encrypted backups of their device in the
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240:. In 2018, Signal Messenger was incorporated as an LLC by Moxie Marlinspike and
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206:. They also developed a firewall and tools for encrypting other forms of data.
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in
November 2011. Some of the company's software products were released under
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On
November 28, 2011, Whisper Systems announced that it had been acquired by
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418:"Saudi telco asks researcher Moxie Marlinspike to help it spy on residents"
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657:"Twitter Acquires Moxie Marlinspike's Encryption Startup Whisper Systems"
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and roboticist Stuart
Anderson in 2010. The company was acquired by
1307:
1179:
1127:
869:
447:"Twitter Takes TextSecure, Texting App for Dissidents, Open Source"
203:
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Whisper
Systems' products were all made for Android and included:
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350:"Twitter Open Sources Its Android Moxie | Wired Enterprise"
263:: An app that allowed the user to exchange end-to-end encrypted
1327:
682:"Twitter Buys Some Middle East Moxie | Wired Enterprise"
397:"Twitter acquires mobile data security gurus Whisper Systems"
137:
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273:: An app that allowed the user to make end-to-end encrypted
1322:
1205:
1107:
375:"Twitter acquires Android security startup Whisper Systems"
274:
956:
585:"Android App Aims to Allow Wiretap-Proof Cell Phone Calls"
264:
631:"Moxie Marlinspike: The Coder Who Encrypted Your Texts"
494:
Marlinspike, Moxie; Acton, Brian (21 February 2018).
787:"Your iPhone Can Finally Make Free, Encrypted Calls"
736:. Whisper Systems. 20 December 2011. Archived from
489:
487:
174:after the acquisition. An independent group called
807:
244:and then rolled under the independent non-profit
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762:. Whisper Systems. 18 July 2012. Archived from
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20:, the open-source software group that started
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322:List of mergers and acquisitions by Twitter
236:TextSecure with RedPhone and renamed it as
231:Marlinspike later left Twitter and founded
31:American enterprise mobile security company
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202:and an encrypted voice calling app called
1462:Software companies disestablished in 2011
559:"Company Overview of Whisper Systems Inc"
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1447:Technology companies established in 2010
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561:. Bloomberg Businessweek. Archived from
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1457:Software companies established in 2010
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808:Marlinspike, Moxie (2 November 2015).
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1442:Defunct companies based in California
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506:from the original on 16 February 2020
334:
267:messages with other TextSecure users.
1472:2011 disestablishments in California
702:Chris Aniszczyk (20 December 2011).
1477:Android (operating system) software
539:from the original on 9 January 2021
13:
473:. Open Whisper Systems. 2013-01-21
373:Tom Cheredar (November 28, 2011).
14:
1513:
1467:2010 establishments in California
940:
920:. Whisper Systems. Archived from
894:. Whisper Systems. Archived from
868:. Whisper Systems. Archived from
395:Brad McCarty (28 November 2011).
734:"TextSecure is now Open Source!"
953: (archived 17 January 2013)
910:
892:"Encrypted backups for Android"
884:
858:
824:
785:Andy Greenberg (29 July 2014).
601:
535:. Pro Publica Inc. 9 May 2013.
220:Twitter released TextSecure as
28:, a product of WhisperText LLC.
1421:WikiLeaks-related court orders
918:"Network security for Android"
760:"RedPhone is now Open Source!"
529:"Signal Technology Foundation"
410:
388:
277:calls to other RedPhone users.
1:
1502:2011 mergers and acquisitions
866:"Mobile Security For Android"
832:Signal Technology Foundation
680:Garling, Caleb (2011-11-28).
655:Andy Greenberg (2011-11-28).
629:Yadron, Danny (9 July 2015).
583:Andy Greenberg (2010-05-25).
348:Garling, Caleb (2011-12-20).
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222:free and open-source software
246:Signal Technology Foundation
180:Signal Technology Foundation
7:
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88:November 28, 2011
10:
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1497:Twitter, Inc. acquisitions
708:The Twitter Developer Blog
445:Pete Pachal (2011-12-20).
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1118:Services and applications
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710:. Twitter. Archived from
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1403:Twitter, Inc. v. Taamneh
1303:Mergers and acquisitions
1274:Acquisition by Elon Musk
215:2011 Egyptian revolution
16:Not to be confused with
1009:Twitter under Elon Musk
704:"The Whispers Are True"
635:The Wall Street Journal
150:17 January 2013 at the
1482:Cryptographic software
1269:2020 account hijacking
1148:Most-followed accounts
812:. Open Whisper Systems
1153:Most-retweeted tweets
1492:Secure communication
233:Open Whisper Systems
190:Security researcher
176:Open Whisper Systems
172:open-source licenses
18:Open Whisper Systems
898:on 29 December 2011
496:"Signal Foundation"
44:Encryption software
36:
924:on 15 January 2012
834:(8 January 2021).
714:on 24 October 2014
533:Nonprofit Explorer
34:
1429:
1428:
1251:Twitter diplomacy
1158:Most-liked tweets
872:on 4 January 2012
740:on 6 January 2012
192:Moxie Marlinspike
164:Moxie Marlinspike
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73:Moxie Marlinspike
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1297:Republik Twitter
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309:egress filtering
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1487:Mobile software
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1368:Whisper Systems
1255:
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1081:Community Notes
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1060:Linda Yaccarino
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951:Wayback Machine
947:Whisper Systems
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810:"Just Signal"
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1367:
1313:Bluefin Labs
1295:
1241:Twitter bomb
1236:Twitterature
1226:Stan Twitter
1221:Headquarters
1138:Twitterrific
1096:Verification
1045:Dick Costolo
926:. Retrieved
922:the original
912:
900:. Retrieved
896:the original
886:
874:. Retrieved
870:the original
860:
850:– via
844:. Retrieved
826:
814:. Retrieved
803:
791:. Retrieved
780:
768:. Retrieved
764:the original
754:
742:. Retrieved
738:the original
728:
716:. Retrieved
712:the original
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675:
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603:
592:. Retrieved
588:
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567:. Retrieved
563:the original
553:
541:. Retrieved
532:
508:. Retrieved
499:
475:. Retrieved
471:"A New Home"
451:. Retrieved
426:. Retrieved
424:. 2013-05-13
421:
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400:. Retrieved
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379:. Retrieved
354:. Retrieved
304:
290:
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230:
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208:
189:
159:
158:
111:Headquarters
103:Acquired by
1380:Suspensions
1246:Twitter bot
1211:Frogtwitter
1144:Statistics
1025:Jack Dorsey
684:. Wired.com
510:21 February
422:SC Media US
352:. Wired.com
291:WhisperCore
242:Brian Acton
196:proprietary
140:.whispersys
1436:Categories
1392:Topsy Labs
1333:Namo Media
1279:Censorship
1069:Technology
1030:Noah Glass
928:9 December
902:9 December
876:9 December
846:24 January
816:5 November
793:18 January
770:22 January
744:22 January
718:22 January
688:2011-12-21
666:2011-12-21
615:2011-12-21
594:2014-02-28
569:2014-03-04
500:Signal.org
477:2014-03-01
453:2014-03-01
449:. Mashable
428:2018-06-18
402:16 January
381:2011-12-21
356:2011-12-21
328:References
261:TextSecure
224:under the
200:TextSecure
120:California
92:2011-11-28
1375:Periscope
1353:TweetDeck
1338:Posterous
1133:TweetDeck
1123:Hootsuite
1055:Elon Musk
1035:Biz Stone
299:Nexus One
281:Flashback
1308:BackType
1180:Twimight
1128:Tweetbot
1091:Features
537:Archived
504:Archived
316:See also
271:RedPhone
252:Products
204:RedPhone
148:Archived
66:Founders
40:Industry
1358:Tweetie
1348:Trendrr
1343:Summify
1318:Dasient
1289:Nigeria
1261:History
1194:Culture
1185:TwitPic
1175:Tweetie
1113:Seesmic
1103:FlockDB
1086:Favstar
1076:Bluesky
1004:X Corp.
988:Twitter
949:at the
852:Twitter
789:. Wired
640:10 July
301:phones.
295:Nexus S
211:Twitter
186:History
168:Twitter
133:Website
105:Twitter
90: (
85:Defunct
58:Founded
26:Whisper
1284:Brazil
1231:Trends
1018:People
661:Forbes
589:Forbes
543:7 June
238:Signal
22:Signal
1409:Usage
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