Open Handset Alliance

…… ...

Kai Rannenberg

Dr.

Lecture Lecture Johann Johann Goethe Wolfgang University Frankfurt M. a. Prof. Deutsche Telekom Chair of Mobile Business Multilateral & Security Mobile Mobile Business I (WS 2014/15)

Market Overview of Mobile Operating Operating Mobile Overview Market of Aspects and Systems Security …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

Microsoft Windows Phone 8 Phone Windows Microsoft OS Firefox Embedded Linux Embedded Alliance) Handset Open (by Android Mobile Edition, PC Phone Pocket PC, Pocket CE, Windows Microsoft Overview Foundation) Symbian (by platform Symbian Overview OS Palm iOS(Unix Apple

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Q2 '14 2014) - Q1 '14

Q4 '13 2014a]

Q3 '13 Others Statista [ Q2 '13 Q1 '13 Bada Q4 '12 Q3 '12 Q2 '12 Symbian Q1 '12 Q4 '11

OS Q3 '11 BlackBerry Q2 '11 Q1 '11 Q4 '10 Windows Worldwide Smartphone Sales End to '10 Q3 iOS '10 Q2 Users by Operating (2009 System Operating by Users '10 Q1 '09 Q4 Android '09 Q3 Q2 '09 Q1 '09

0,00

10,00 20,00 30,00 40,00 50,00 60,00 70,00 80,00 90,00

Market share Market

…… ...

Others

[Gartner2013]

Symbian

Bada

Android 64,2%Android

iOS 18,8%iOS BlackBerry OS BlackBerry Worldwide Smartphone Sales End to

Users by Operating System (Q2 2012) (Q2 System Operating by Users

Windows

Windows 2,6% Windows

iOS

Bada 2,7% Bada

BlackBerry OS 5,2%OS BlackBerry

Others 0,6% Others

Symbian 5,9% Symbian Android …… ...

Others

[Gartner2013]

Symbian

Android 79,0% Android

Bada BlackBerry OS BlackBerry Worldwide Smartphone Sales End to

Users by Operating System (Q2 2013) (Q2 System Operating by Users

Windows

iOS 14,2%iOS

iOS

Bada 0,4% Bada

Windows 3,3%Windows

Others 0,2% Others

Symbian 0,3% Symbian

Android BlackBerry OS 2,7%OS BlackBerry …… ...

2014a]

Android 84,7% Others Statista [ Bada Symbian

BlackBerry BlackBerry OS BlackBerry Windows Worldwide Smartphone Sales End to Users by Operating System (Q2 2014) (Q2 System Operating by Users iOS

Android iOS 11,7% 0,6%

Others Windows Windows 2,5% BlackBerry BlackBerry OS 0,5% …… ...

[Nielsen2012]

the Android Android the operating system.” “During July 2012, 51,9% of smartphone owners in the US had a device that runs on

Others

iOS 34,3%iOS

BlackBerry OS BlackBerry Android 51,9%Android

US installed installed US smart base phone iOS

by Operating 2012) (July System by Operating

Android

Others 5,9% Others BlackBerry OS 8,0%OS BlackBerry …… ...

[Nielsen2013]

Others

that runs on the Android operating system.” “During Q2 2013 an average of 52% of smartphone owners in the US had a handset

Windows

iOS 40,0%iOS Android 52,0% Android US installed installed US smart base phone

by Operating System (Q2 2013) (Q2 System by Operating

BlackBerry OS BlackBerry

iOS

Android

Others 2,0%Others

Windows 2,0% Windows BlackBerry OS 3,0%OS BlackBerry …… ...

that runs on the Android operating system.” “During July 2014 an average of 51,5% of smartphone owners in the US had a handset [Statista2014b] iOS 42,4% Others

BlackBerry OS BlackBerry

Windows Microsoft Android 51,5% US installed installed US smart base phone

iOS Apple by Operating 2014) (July System by Operating Android

0,2%

Others Windows Windows 3,6% BlackBerry BlackBerry OS 2,3% …… ...

2012 -

(%) 2.6 5.2 2.7 5.9 0.6 64.2 18.8 2Q12 Share Share 100.0 Market Market

2013 vs. Q2 2013 - [Gartner 2013, Statista2014a] 2013, [Gartner Units 2Q12 863.3

9,071.5 4,039.1 7,991.2 4,208.8 by Operating System Operating by 98,664.0 28,935.0 153,772.9

(%) 0.3 0.2 3.3 2.7 0.4 79.0 14.2 2Q13 Share Share 100.0 2014 vs. Q2 2014 Market -

Q2 Units 2Q13 630.8 471.7 838.2

7,407.6 6,180.0 31,899.7 177,898.2 225,326.2

Worldwide Smartphone Sales to End Users End to Sales Smartphone Worldwide (%) 2,5 0,5 0,6 84,7 11,7 2Q14

Share Share 100.0 Market Market

others

 Units 2Q14

7,382.5 1,476.5 1,771.8 34,550.1 295,300 250,119.1 In 1.000 Units 1.000 In

TOTAL Others Bada Symbian BlackBerry OS iOS Windows Android System Operating Operating …… ...

(%) 2012 3.8 2.8 - 29.7 18.8 44.9 2Q12 Share 100.0 Market Market

by Vendor by to End Users End to Units 2Q12 5,827.8 4,370.9 45,603.8 28,935.0 69,035.4 2013 vs. Q2 vs. 2013 - 153,772.9

(%) 5.1 4.7 100 44,3 31.7 14.2 2Q13 Share Share Market Market [Gartner 2013, Statista2014c, Statista2014d] Statista2014c, 2013, [Gartner

2014 vs. Q2 vs. 2014 - Units 2Q13 Q2 99,901.2 71,380.9 31,899.7 11,473.0 10,671.4 225,326.2

(%) 4.9 5.4 6.9 Worldwide Smartphone Sales Sales Smartphone Worldwide 45,8 25.2 11.9 2Q14 Share Share 100.0 Market Market

Units 2Q14 295,300 14,469.7 15,946.2 20,375.7 74,415.6 35,140.7 In 1.000 Units 1.000 In 135,247.4

TOTAL Others Huawei Lenovo Apple LG Electronics Samsung Company …… ...

Long timeLong trends (maybe?)

and PC connectivity and email push with phone PDA 1st Blackberry: RIM Palm: 1st small and affordable PDA with address book, calendar, calendar, book, address with PDA affordable and small1st Palm: Nokia: Feature phones Feature Nokia: Microsoft: Architectures, operating systems operating Architectures, Microsoft:

. . . .

available available big the players: from Killer Application Killer Application Champions are very successful their killer application time until is for some also

often have some (sometimes modest) have (sometimes relatively some often market to high investment: share due Big players (originally from neighbouring fields) fields) Big players neighbouring from (originally

. . …… ...

Mobile Devices Mobile vs. Stationary Devices Stationary

Usability Usability issues and Security system integrity issues Limited device capabilities capabilities Limited device and resources (storage, memory, processing time, etc.)

. . .

the following challenges: mobile mobile operating systems also have to cope with Due to the limitations limitations the Due to mobile of the devices, . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

party software cannot - rd

device manufacturers device

Mobile OS unavailableOS Mobile other to : Less flexible, as 3 operating operating systems for their mobile devices.

operating operating systems Tend as to be not Tend much affected by malware

”

open closed “ “

Disadvantage be easily installed and executed than than Advantage: Blackberry Apple OS, iOS. Some manufacturers manufacturers (still) Some rely e.g. OS, own on RIM and interoperable and interoperable operating systems (e.g. Windows CE, Symbian OS, Android). Later, more and more platforms switched open switched Later, more and platforms more more to own Originally, Originally, phone mobile most manufacturers used their

. .

. . …… ...

device manufacturers device

Mobile OS unavailableOS Mobile other to

based) - 1.4

Most devices equipped with Palm OS 5.4 OS Palm with equipped devices Most 8 iOS 10.3 OS BlackBerry

Latest release: 2.0 release: Latest Latest release: Asha Asha release: Latest Latest release: release: Latest Latest release: release: Latest Latest release: release: Latest

. . . . .

Samsung bada Samsung Nokia Series 40, Asha

BlackBerry BlackBerry OS Apple Apple iOS (Unix Palm OS (Garnet (Garnet Palm OS OS)

. .

. . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Devices Palm Palm OS …… ...

Overview Palm Palm OS

palmsource

equipped with OS Palm 5.4 (Garnet), such as the Tungsten series. … There are no devices using version 6.1 on the market. Most of the devices are Fossil Samsung Sony Palm Palm (e.g. Treo series) Handspring Garmin (navigation devices)

......

Current version 6.1 (Cobalt) 6.1Current version Several Several device manufacturers: The operating system system made operating is by The

. . …… ...

Features Palm Palm OS

CDMA Bluetooth (IEEE 802.11)WiFi GSM/GPRS IrDA

. . . . . Long battery Long life Large choice of 3rd party software available Support Support for several encryption security and algorithms (e.g. SHA1, RSA, RC4) Integrated Integrated personal information management (PIM) Support of the TCP/IP network network protocol of the TCP/IP Support Communication:

. .

. . …… ...

History

Palm Palm OS

with Windows Mobile Windows with

”

future versions to be based on the the on based to be versions future

–

Packard acquired Palm for $1,2 billion, name billion,$1,2 for Palm acquired Packard Treo Smartphones Treo - “ s ’

2011: HP announced to stop the production of all HPwebOS HPwebOS all of production the stop to announced HP 2011: tablets and phones smart including devices, Access Linux platform Linux Access Hewlett 2010: HPwebOS to change 2004: Palm OS 6.1 (Cobalt) and Palm OS 5.4 (Garnet) OS 5.4 Palm and (Cobalt) OS 6.1 Palm 2004: Palm 2006: OS Garnet to change Name 1998: Palm III using Palm OS v3 OS Palm III Palm using 1998: display colour a and OS Palm using deviceIIIc, Palm first 2000: OS 5 Palm 2003: 1996: Palm Pilot 1000, first device using Palm OS Palm using device first 1000,Pilot Palm 1996:

...... …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Apple iOS Apple

touch

party hardware

- based based system operating - interface interface uses multi -

gestures on on third User iOS derived iOS derived from Mac OS X, a Unix Apple does permit not the to run OS Touch, iPad and Apple iPad and Apple TV Touch, Latest release: iOS 8 Developed Developed by Apple for iPhone, iPod

. . . . . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

based

- = Linux mobile OS mobile independent - Sailfish OS (by Jolla) OS Sailfish



[WSJ2013]

HTC Manufacturer 2“ for Symbian^3 devices for Symbian^3 2“

based based -

MeeGo (by Nokia, Intel) MeeGo (by

profit organisation Mozilla) organisation profit  -

Focused Mobile -

Currently under development Taiwan by development under Currently Latest release: 1.4 (August 2014) (August 1.4 Latest release: Latest release: Sailfish OS v1.1.0.39 (October 2014) (October v1.1.0.39 OS Sailfish Latest release: 2014) (November 2.3 Latest release: Latest release: Windows Mobile 6.5.5 Mobile Windows Latest release: 8.1 Phone Windows Latest release: Latest release: 5.0 (Lollipop) 5.0 Latest release: Latest release: “Nokia Belle Feature Pack Feature Belle “Nokia Latest release:

...... China Firefox OS (by non OS Firefox Tizen (by Samsung,Intel, Linux Foundation) Maemo (by Nokia) Maemo (by Windows Phone Windows Windows Mobile Windows Android (by Open Handset Alliance) Handset Open (by Android Symbianplatform Linux: LiMo (Linux Mobile), Openmoko Linux, Qt ExtendedOpenmoko (Qtopia) (Linux Linux, Linux: Qt Mobile), LiMo

. .

. . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Devices Symbian …… ...

Symbian [Symbian2006] Consortium/Licensees

In 2006, Symbian was owned by …… ...

2008 -

1998 and major

WiFi Symbian History Symbian

becomes the

and Symbian^1 („Symbian

party applications. party - announced rd Symbian Ltd.

buys

Nokia : to code of Symbian platform Symbian Foundation : It is possible to install 3 install to is possible It : “ Symbian OS telephones were available since 2001

une: “

J December Open ) „ 9210 Communicator 2001: Nokia of Beginning “

. . 2008 contributor 2008 2007: Symbian OS 9.4 (S60 5th edition) = One HSDPA 2005: Symbian OS 9.1 (S60 3rd edition) 2006: Symbian OS 9.3 released, extending the OS with 2004: Symbian OS 8.0 Siemens and Sony Ericsson „Open Owner: Ericsson, Nokia, Panasonic, Psion, Samsung Electronics, Symbian was founded as a privately owned company in June 1998.

. .

. . . . .

. . …… ...

2014 -

. 2009

Symbian Symbian . Nokia takes over Symbian History Symbian

only organisation -

Nokia N8 first smartphone to run Symbian^3. Symbian software

[Nokia2013] ). founded . Market share in sharp decline, notably in the high priced successor to Symbian OS and Nokia Series 60 outsources

Relevance Relevance of Symbian platform, especially in the mobile app Symbian Foundation Symbian platform Symbian platform

2014 January: No new applications can be published in the Nokia Store (store.ovi.com) 2013: Nokia Belle Feature 2 Pack (latest version) 2012: Symbian Belle renamed to Nokia Belle 2011 September: Nokia development and 2,300 employees to Accenture market, drops significantly smartphone segment 2011 February: Nokia collaborates with Microsoft and adopts Windows Phone 7 for their smartphones. 2011: Symbian Anna and Symbian Belle as an update to Symbian^3 Foundation transition into a licensing governance of the Symbian platform. 2010 November: 2010 November: Due to a lack of support from funding members, 2010: Symbian OS 9.5 (Symbian^3 2009:

. . . .

. . . . . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Devices EmbeddedLinux …… ...

Overview installed installed Linux - EmbeddedLinux

operating operating system.

“

Open Source

OS platforms. Motorola, as one of the major phone mobile of the major one as Motorola, manufacturers, their of was as (one)using Linux However, there are several Linux distributions, distributions, are several Linux However, there as that such can µCLinux, be installed on existing devices iPAQ). (e.g. were offering devices devices were offering with a pre Motorola, NEC, Panasonic). solution (e.g. Linux is an „ Linux device a limited manufacturers of amount Only

. .

. . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Android

collabora

Mobile Mobile G1 -

T November 2014: Version 5.0 Lollipop October October 2008: First commercially available phone running Android: established established in 2007 Android based on modified version of Linux kernel ted to develop ted to develop release and Android. Open Handset Alliance (OHA) Google members the and Google other of Alliance Handset Open

. .

. . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Devices Windows Windows CE, Pocket PC, Pocket PC Phone Edition, Phone Pocket PCEdition, Mobile …… ...

History [Hpcfactor2010] Windows Windows CE, Pocket PC, Pocket PC Phone Edition, Phone Pocket PCEdition, Mobile …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Microsoft Windows Phone 7 Phone Windows Microsoft

technically a new technically

Mobile New user interface backward compatibility backward Aimed at market consumer instead of enterprise market unlike Windows platform, platform, but without platform different and Launched Launched in and November October 2010 Successor Windows to Mobile

. .

. . …… ...

Microsoft Windows Phone 8 Phone Windows Microsoft

Latest Latest release: Windows 8.1 Phone in April 2014 Successor Successor Windows to Phone 7 Windows Windows Phone 8 launched in 2012October together with Windows 8 with optics similar

. . . …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Firefox OS Firefox

)

Vivo

Congstar userprivacy ublicly demonstrated

profit profit organization known - Telefónica brand brand Telefónica in Poland by Deutsche Telekom by Deutsche Poland in

, a non source mobile OS for smartphones - Firefox OS first p in Brazil by in Brazil Mozilla in Spain by Telefónica in Spain

based open - user. not device, the locally on be analysed will User data traded. or exploited servers, to transferred LG Fireweb why stated is a reason applications, of installation Upon the by granted be to need and are necessary rights certain ZTE Open Fire Touch One Alcatel subsidiary Germany by in sold (also . . . . . Latest release: 1.4 in August 2014 release: 1.4Latest in August Mozilla has strong position on on position has strong Mozilla launched: Focus Focus on open standards, e.g. HTML5 applications 2012 February: 2013 July: First commercial Firefox OS based phones Linux and tablet computers Developed by for Firefox web browser ...... …… ...

Systems and Security Aspects and Security Systems

Market Overview Operating Market Overview Mobile of

Overview Overview

based) - independent independent mobile OS -

......

Security features selected of mobile OS

Manufacturer The Market for mobile devices devices for Market and The mobile mobile OS unavailable Mobile OS to other device manufacturers

. . . .

…… ...

Current Threats from Malware on Mobile Mobile on Malware OS

party software: party - rd

Malware can be executed mobile on operating systems, either intentionally or by security leaks inside the mobile operating system (exploits). Shorter Shorter battery runtime (more processing/resource usage) Loss of (malware data Loss erasing data) Loss of money (e.g. malware sending SMS to premium services ) Device malfunction

. . . .  Possible Possible threats user are: for the Many operating Many mobile systems the allow 3 of execution

. . …… ...

Timeline [ATD2013]

legitimate legitimate 2012

PDA/Mobile Threats PDA/Mobile

Card exploit Card - of Mobile Malware of malware programs masquerading as masquerading programs malware of : First Symbian OS malware OS Symbian : First : Liberty Horse Trojan Horse : Liberty Mailer SMS : Telefonica SMS unwanted sends : Flooder devices Palm on data erases : Phage V : Nokia apps grew by more than 600 percent in 600percent than more by grew apps

The number The mobile Android target: Most popular … 02/2003 09/2004 12/2000 08/2001 09/2001 09/2000

. . growth Strong ......

Beginnings of of Mobile Malware Beginnings …… ...

[Sophos2014] Timeline PDA/Mobile Threats PDA/Mobile …… ...

Security Security Precautions Countermeasures and

Virus scanners Firewalls Checking certificates Code Carrying Proof Definition of access rights and monitoring of their their enforcement. andof monitoring rights access Definition of Encryption control Access Processes are not able to access the memory of other processes. the other memory access of are to ablenot Processes

......

Additional Security Software may be needed, e.g. needed, be may Software Security Additional Code integrity management: Integrity of programs is checked before checked is programs of Integrity management: integrity Code e.g. by started are the Support for security modules security for Support I/O Secure Access controls Access Memory protection Memory protection File

. . . . .

. . …… ...

Access Access Control

Accessing a peripheral device Reading Reading a file a Writing file

. . . actions, actions, which they are allowed to. The OS controls that users or the processes processes that the OS controls or users The started a user, onlythose execute by can Every user has certain assigned has certain assigned access Every user rights, e.g.

. . …… ...

s ’

Print Device Periphery Access Access Matrix

F3 Read Read Write Execute

F2 Read

F1 Read Read Write

Object

U4 U3 U2 U1 User …… ...

          

Code Integrity Management

           Secure I/O Secure

) ) ) ) ) ) ) ) ) ) )

           ( ( ( ( ( ( ( ( ( ( ( Support for Support Security Modules

           Access Access Control

)

           ( Security of Operating of Security Systems File File Protection

           Memory Memory Protection

Feature is available, depending on the available hardware (e.g. availability of a card reader). a cardof availability (e.g. hardware available on the depending available, is Feature

 2003

) )

 (

J2ME Embedded Embedded Linux Garnet OS Garnet OS 5.5 Symbian^3 Phone Phone Edition PocketPC Windows Windows Mobile 6.5 Windows Windows CE 6.2

Windows Windows Phone 8.1 Blackberry OS 10

Firefox OS 1.3 Firefox Apple Apple iOS 8

Android 4.4 Android Operating System Operating …… ...

- - - 23

- 09 - 03. - - grew - 09 lead - - smartphone

s - 22 u - teens 26. - malware - - - 11 - 11 the - and -

- Bibliography 22. mobile - -

11 adults - - winning 26. - finds - - 11 - accessed 2013 study -

store/, -

Changes to supported content types in the

nokia , accessed 2013 - 22 - the - 11 most/ - in - owners.html, accessed 2013 - - types - android - smartphone Young Adults and Teens Lead Groth Among Smartphone Owners, Who‘s Winning the U.S. Smartphone Market?, - content targets - -

Juniper Study Finds Mobile Malware Grew 600 Percent, Targets Android 03. .html, accessed2013 - among - - 09 - percent - supported - market [Nokia2013] Nokia Developer News: Nokia Store, http://developer.nokia.com/Blogs/News/blog/2013/10/04/changes to http://www.nielsen.com/us/en/newswire/2012/young growth [Nielsen 2013] http://www.nielsen.com/us/en/newswire/2013/whos [Hpcfactor2010] www.hpcfactor.com/support/windowsce, accessed 2014 http://commons.wikimedia.org/wiki/File:Windows_CE_Timeline.png, accessed 2014 [Nielsen 2012] [Canalys07] http://www.canalys.com/pr/2007/r2007024.htm,accessed 2011 [Gartner2013] Gartner Group (2013), Gartner Says Smartphone Sales Grew 46.5 Percent in Second Quarter of 2013 and Exceeded Feature Phone Sales for First Time, http://www.gartner.com/newsroom/id/2573415, accessed 2013 [ATD2013] Most, http://allthingsd.com/20130626/juniper 600 ...... …… ...

- 53

- , - - 07. - - 10 der - - absatz der - - -

, accessed 2014

07. 20.

- - 07. - 10 09 07. - - 10 - - Bibliography 2014.pdf 10 - - 2009/, accessed 2014 - report http://www.sophos.com/de - quartal - threat 4 - - usa/, 2014 accessed - seit - den - security - in quartalen/, accessed 2014 - - quartalen/, accessed 2014 - Focused Mobile Operating System (28 August 2013) - hersteller nach - - nach -

26. - smartphones - 11 - smartphone fuer - hersteller - - Sophos Sophos Mobile Security Threat Report, der - betriebssysteme - HTC Develops China

smartphone - 04. - der [WSJ2013] http://online.wsj.com/news/articles/SB10001424127887324463604579040172467657 350, accessed 2013 http://de.statista.com/statistik/daten/studie/173056/umfrage/weltweite marktanteile [Statista2014d] http://de.statista.com/statistik/daten/studie/173048/umfrage/weltweiter [Statista2014b] http://de.statista.com/statistik/daten/studie/77324/umfrage/marktanteile betriebssysteme [Statista2014c] [Symbian2006] symbianblogs.com/history.html, accessed 2011 [Statista2014a] http://de.statista.com/statistik/daten/studie/73662/umfrage/marktanteil smartphone [Sophos2014] de/medialibrary/PDFs/other/sophos 09 ......