Download Security switch

US 20130340069A1
(19) United States
(12) Patent Application Publication (10) Pub. No.: US 2013/0340069 A1
Yoffe et al.
(54)
(43) Pub. Date:
SECURITY SWITCH
Publication Classi?cation
(71) ApplicantszSimon Yoffe, Givat Shmuel (IL); David
Yoffe, Givat Shmuel (IL)
(72)
(51) Int. Cl.
G06F 21/30
(52) US. Cl.
Inventors: Simon Yoffe, Givat Shmuel (IL); David
USPC .......................................................... .. 726/17
(57)
APP 1. No.: 13/969,748
_
(2006.01)
CPC .................................... .. G06F 21/30 (2013.01)
Yoffe, Givat Shmuel (IL)
21
Dec. 19, 2013
ABSTRACT
S y stem and method for securing a P ersonal device that
includes a device core and a peripheral device from unautho
_
riZed access or operation. The system comprises an isolated
(22) Flled'
Aug‘ 19’ 2013
sWitch, included fully or partially Within an envelope of the
personal device. The isolated sWitch cannot be affected in its
operation by either the device core or the peripheral device.
Related US Application Data
_
_
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The sWitch may be operated by an authorized user of the
(63) commuanon'm'pan of apphcanon NO‘ 13/020304?’
?ledoPFel?3,2011,110WPat-P10385223”,Whlchls
personal device either preemptively or in response to a
detected threat. In some embodiments, the isolated sWitch
a connnuanon'm'pan of apphcanon NO‘ 11/741,751’
includes an isolated controller Which can send one or more
?1edOnAPr'29>2007’nOW Pat No' 8,090,961'
signals to the peripheral device and/or part of peripheral
(60)
provisional application NO_ 60/881,510’ ?led on Jan
22’ 2007_
device. In some embodiments, the isolated sWitch includes an
isolated internal component and an isolated external compo
(30)
Foreign Application Priority Data
nent, both required to Work together to trigger the isolated
sWitch operation. In some embodiments, the isolated sWitch
Feb. 5, 2010
(RU) ................................ .. 201000159
includes an isolated disconnector for connecting and discon
necting the device core from part of the peripheral device.
Personal Device
64
Device core
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Input Mode
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1 04
Patent Application Publication
Dec. 19, 2013 Sheet 1 0f 16
US 2013/0340069 A1
FIG. 1
100
Device core
_ 7‘
Personal Device
50
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Isolated switch
Peripheral Device
102
1 O4
Patent Application Publication
Dec. 19, 2013 Sheet 2 0f 16
US 2013/0340069 A1
FIG. 2
100
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Personal Device
52
Isolated switch 1 02
V
Isolated disconnector
200
Peripheral Device
1 O4
Patent Application Publication
Dec. 19, 2013 Sheet 3 0f 16
US 2013/0340069 A1
FIG. 3
Personal Device
54
100
Device core
Isolated switch 102
SWl.tch Mode
Indicator
isolated disconnector 200
300
Peripheral Device
1 O4
Patent Application Publication
Dec. 19, 2013 Sheet 4 of 16
FIG. 4
Personal Device
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400
Logic
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Patent Application Publication
Dec. 19, 2013 Sheet 5 0f 16
FIG. 5
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Patent Application Publication
Dec. 19, 2013 Sheet 6 0f 16
US 2013/0340069 A1
FIG. 6
Personal Device
60
1 00
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200
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400
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lllpllt Mode
Logic
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components
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1 O2
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500
Patent Application Publication
Dec. 19, 2013 Sheet 7 0f 16
US 2013/0340069 A1
FIG. 7
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Patent Application Publication
Dec. 19, 2013 Sheet 8 0f 16
US 2013/0340069 A1
FIG. 8
Personal Device
Device core
64
100
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SECURITY SWITCH
CROSS REFERENCE TO RELATED
APPLICATIONS
[0001]
This application is a Continuation in Part of US.
patent application Ser. No. 13/020042, titled “Security
Dec. 19,2013
unauthorized operations on the user’s behalf. A single per
sonal device may have a number of different communication
means such as phone-lines, cables, a Wireless LAN, Blue
tooth, etc, Which only increases the security risk. These com
munication means can be used to retrieve private information,
audio/video information, user location information (track
Switch” and ?led Feb. 0, /2011 (now US. Pat. No. 8,522,
309), Which Was a Continuation in Part of US. patent appli
cation Ser. No. 1 1/741,751 titled “Security SWitch” and ?led
29 Apr. 2007, Which claimed priority from US. Provisional
Patent Application No. 60/881,510 ?led 22 Jan. 2007. This
Where user is located When personal device is using out com
munication) or transmitted information, and can be used for
transmitting data on the user’s behalf Without his/her knoWl
application further claims priority from Russian patent appli
sensor components such as a microphone, earphone(s),
speakers, camera, etc, are able to capture the information at a
cation No. 201000159 ?led 5 Feb. 2010, noW alloWed as
EAPO patent No. 013885. All of the abovementioned patents
and patent applications are incorporated herein by reference
in their entirety.
TERMS
[0002]
Authorized user4oWner or permitted operator of a
personal device.
[0003]
Unauthorized useriany user or softWare that does
not have an explicit permission to operate the personal device.
[0004] Unauthorized accessiany attempt of an unautho
rized user to access or operate a personal device
[0005]
False indication/noti?cationian indication shoW
ing one state, While another “real” state is different.
[0006] Hooked componentia component connected in
parallel With other device(s) to the same input element, in
such Way that both devices can operate together, but the
hooked component is isolated from the other device(s).
[0007] “Man in the middle”ia component logically
placed betWeen tWo other components and Which can control
the information passed betWeen the tWo other components.
[0008] Secure Inputian input readable only to a permitted
component, meaning that the input of the permitted compo
nent cannot be revealed by others components.
[0009] Internal4enclosed Within an envelope or surface of
the personal device or positioned at least partially on the
surface of the envelope of the personal device.
[0010] Extemaliseparate from a personal device but
Which can be connected to the personal device or plugged into
the personal device.
[0011] Isolated sWitchia sWitch that cannot be operated or
affected by any entity or factor except an authorized user.
[0012] Independent operationian operation that cannot be
affected by any entity or factor except an authorized user.
[0013] Isolated controlleria controller that cannot be
operated or affected by any entity or factor except an autho
rized user.
FIELD AND BACKGROUND
[0014] Embodiments disclosed herein relate to the security
of personal communication or computing devices Which
communicate With other devices Which use softWare for
operation. Personal softWare operated devices or appliances
(hereinafter “personal devices”) such as mobile phones, IP
phones, pocket PCs, PDAs, laptop computers, desktop com
puters and netWork sWitches, use a variety of hardWired or
Wireless communication means for communication With
edge.
[0015]
Devices With permanently installed or accessory
user location. Devices With permanently installed or acces
sory communication components such as a modem, a LAN
adapter, a Wireless LAN adapter, Bluetooth, GSM, etc, are
able to transmit information and may reveal the user location.
When signals are transmitted from the user location, the
transmission can be used for tracking the user location. Com
ponents of a device/appliance that are controlled by softWare
and electronic sWitching devices may be controlled by an
unauthorized user even if they Were disabled earlier by the
authorized user. The components can be controlled Without
the user noticing the change in mode of operation. For
example, a mobile phone may look “sWitched off” but may
still be functioning or even transmitting, making a call or
sending an SMS on the user’s behalf, or capturing private
conversations around its location.
[0016] Local authorized or unauthorized users can easily
modify the softWare operating the personal device, thereby
causing a security breach, eg by doWnloading a virus-af
fected softWare update. This scenario of softWare modi?ca
tion is very common: on one hand it is much easier than
hardWare modi?cation, and on the other hand it is much
harder to verify such a modi?cation, or notice unWanted
change.
[0017] At present, the problem of unauthorized access is
handled by different types of security softWare such as ?re
Walls, anti-virus programs, anti-spyWare programs and secu
rity systems. HoWever, each neW softWare security system is
eventually overcome by neW hacking methods, viruses,
Worms, Trojans and other threats. This creates an endless
competition betWeen security providers and unauthorized
users. In essence, softWare security is hard to implement
and/or prove. Even if the theoretical model of the security is
proven, there may still be a mistake or bug in the implemen
tation that alloWs a break in the security. Consequently, soft
Ware security solutions cannot be trusted.
[0018] HardWare security solutions are knoWn and include:
devices used to isolate telephone lines in order to prevent
unauthorized capture of audio information from phone user
(see US. Pat. No. 5,402,465 and US Pat. Application No.
20050271190); data line sWitches for computers that discon
nect a computer line physically from the Internet, Working in
manual and/or automatic mode (US Pat. Application No.
20030062252); a poWer off method for a Wireless peripheral
device, Which terminates poWer to all parts of the Wireless
device except the control chip by a certain operation on a
connect button (US Pat. Application No. 20050009496); a
sWitch that poWers-on a PDA in response to the stylus being
these communication means to try and break open the per
removed from the PDA’s stylus holder and, selectably, poW
ers-off the PDA in response to the stylus being replaced into
sonal device security and obtain personal and other informa
the PDA (US. Pat. No. 6,233,464); a mobile phone With tWo
tion on the personal device user or oWner, or to perform
input modes, Whereby a sWitch of input modes is attained by
other devices. A remote unauthorized user can adversely use
Dec. 19, 2013
US 2013/0340069 A1
changing an electrical connection between the main printed
circuit board (PCB) in the phone and the front and back PCBs
[0024]
The security switch may be mechanical (i.e. electri
cal contacts switched mechanically) or electronic/electrical.
(US. Pat. No. 7,031,758); the NetSafe Computer Security
Switch, which uses a simple physical switching technology in
When mechanical, its control is already isolated because it
a way that allows a computer or group of computers to quickly
user, not by the device itself. A mechanically operated switch
should not have an electrically operated bypass. When elec
and easily block a communications signal from entering the
computer(s) and restart the signal without any software and
without the need to power down, reboot, or run software on
the computer(s) (US Pat. Application No. 20040243825); a
wireless button for a laptops, offered by the Hewlet
[0019]
Packard Corporation in its line of Pavilion laptops
can be operated only by manual physical operation of the
tronic/electrical, the security switch is isolated electrically,
i.e. completely separated electrically from other elements or
components of the personal device.
[0025] The principle of operation of the security switch
ables all integrated wireless components in the laptop (e.g.
disclosed herein relies solely on manual disconnection (or
connection) of audio/video/ communication or power supply
components in the personal device in order to avoid unautho
WiFi and Bluetooth), and a wireless light that indicates simul
taneous the computer’s overall wireless state (enabled or
disabled); the portable electronic device that disconnects a
receiving antenna from the duplexer of a mobile phone (US
rized access to the information or personal device. This pro
vides full isolation even in cases of full access to the device
software or remote access to electronic components of the
device, in the sense that an unauthorized user is not able to
Pat. Application No. 20040203536A1).
connect electrical circuits that are switched off manually, and
a bene?ciary side effect of power saving in case of power
(hereinafter the “HP wireless button”), which enables or dis
[0020]
All existing protection solutions suffer from one of
two disadvantages: either the switch is “extemal” and can
therefore be tampered with by an external factor, or the switch
is internal but not fully isolated from the device itself (and
therefore can be manipulated by the software of the device).
Consequently, existing solutions cannot provide simulta
neous temporary protection from audio/video information
capture, cannot provide simultaneous temporary protection
from both audio/video information capture and unauthorized
access and user location\device location and cannot provide
secure security mode exit or prevent capture of the logic
required for exiting the security mode. Existing internal
switches cannot provide prevention of false noti?cation about
the device security mode in a device with already broken
software security, i.e. in a state in which an unauthorized user
gains access or control of the personal device despite software
protection solutions.
[0021] There is therefore a widely recognized need for, and
it would be highly advantageous to have a simple internally
isolated hardware security solution for the users of the above
mentioned personal devices that does not suffer from the
above mentioned software and hardware solution disadvan
tages.
SUMMARY
[0022] Embodiments disclosed herein disclose hardware
security solutions that overcome the problems of hardware
and software security solutions mentioned above. They pro
vide a user of a personal device with hardware means for
supply disconnection.
[0026] Two main modes of operation are provided: “mode
”imanual switching by an authorized user (or simple
“user”) for preventing capture of audio/video information
from the user; “mode 2”imanual switching by the autho
rized user for preventing unauthorized determination of the
user location or capture of other information. In mode 1, the
user can receive visual information (for example incoming
calls, SMS, memos, ?les, etc) yet is protected from being
listened to, recorded or visually captured by unauthorized
access to his personal device. In mode 2, the communication
to the device is completely disconnected, so the device loca
tion cannot be discovered by any means and no information
transfer is possible. There is also a possibility to combine
modes 1 and 2 into a “combined mode”. Note that mode 2 is
not a substitute for mode 1, since in case of unauthorized
access; audio/video information canbe captured and stored in
the device memory, then transmitted after the user exits mode
2
[0027] The switch allows the user of a personal device to
temporarily change the mode of operation when in need of
privacy and wants to avoid possibility of spying after him/her
by capturing his/her audio/video information or tracking his
location. A manually operated security switch allows the user
to disconnect components that can capture audio/video and
user input information or transmit signals from/to the user’s
personal device. When an electrical circuit is broken manu
ally, it cannot be reconnected by an unauthorized user even in
protecting information such as private information, audio/
case of full access to the device software or by remote access
video information, user location information or transmission
to an electronic personal device. When all components
information and for performing operations securely. The
capable of capturing audio/video informationiie. micro
phone(s), headphone(s), speaker(s), and camera(s) are dis
hardware means, referred to as “security switch” or “isolated
switch”, are internal to the personal device and is isolated,
both “intemal” and “isolated” being de?ned above. The “iso
lation” also means that the control elements of the switch do
not have any external communication capability and are pro
tected from remote operation/manipulation.
[0023] In some embodiments a security switch disclosed
herein is a component having (a) control elements that are not
connected electrically to an environment from which they
should be isolated and shielded, or that are decoupled in such
a way that both electrical and magnetic ?elds cannot in?uence
their operation, and (b) switching elements that cannot be
connected, disconnected or bypassed by elements other than
the control elements in (a).
connected, information cannot be obtained by an unautho
rized user. When all components capable of transmitting a
signal from or to a user’s device or appliance (i.e. RF, WiFi,
Bluetooth, NFC, and LAN) are disconnected, the user loca
tion and other private information cannot be obtained by an
unauthorized user. Embodiments of systems and methods
disclosed herein are not concerned with software security, but
with protecting certain private information by disabling
devices capable of capturing information or transmitting sig
nals, even in cases when the device security is already broken.
The protection is based on an operation that can be performed
only by an authorized user (manual disconnection of the
relevant components) and that cannot be performed by the
US 2013/0340069 A1
software of the device or by the device itself. The protection
is further based on the principle that the operation is not
knoWn to the software of the device or to the device itself.
[0028] In some embodiments, there is disclosed a system
for securing a personal device that includes a device core and
a peripheral device from unauthorized access or operation,
the personal device having an envelope or surface, the system
comprising an internal isolated sWitch having operating func
tions that cannot be affected by either the personal device core
or by a peripheral device, Wherein the isolated sWitch
includes an internal component located Within the envelope
or at least partially on the surface of the personal device and
Wherein the isolated sWitch internal component is selected
from the group consisting of a mechanical element Without an
electrically operated bypass and an electronic/electrical ele
ment separated electrically from elements or components of
the personal device.
[0029] In some embodiments, the isolated sWitch includes
an isolated disconnector for connecting and disconnecting the
device core from part of the peripheral device. In some
embodiments, the isolated sWitch includes an isolated inter
nal component and an isolated external component, Wherein
the isolated internal and external components trigger together
the isolated sWitch operation.
[0030] In some embodiments, the peripheral device may be
a sensor device, for example a microphone, earphone(s),
speakers, camera, etc. In some embodiments, the peripheral
device may be a communication device for example a
modem, LAN adapter, Wireless LAN adapter, Bluetooth
device, GSM device, RF device, etc.
[0031]
In some embodiments, the peripheral device may be
Dec. 19,2013
present preferred embodiment disclosed herein Will become
further apparent upon consideration of the folloWing descrip
tion, taken in conjunction With the accompanying ?gures,
Wherein:
[0035] FIG. 1 shoWs a ?rst embodiment of a personal
device With a security sWitch disclosed herein;
[0036] FIG. 2 shoWs another embodiment of a personal
device With a security sWitch disclosed herein;
[0037] FIG. 3 shoWs yet another embodiment of a personal
device With a security sWitch disclosed herein;
[0038] FIG. 4 shoWs yet another embodiment of a personal
device With a security sWitch disclosed herein;
[0039] FIG. 5 shoWs yet another embodiment of a personal
device With a security sWitch disclosed herein;
[0040] FIG. 6 shoWs an embodiment of a personal device
With an input solution for security sWitch disclosed herein;
[0041] FIG. 7 shoWs yet another embodiment of a personal
device With a security sWitch disclosed herein;
[0042] FIG. 8 shoWs yet another embodiment of a personal
device With a security sWitch disclosed herein;
[0043]
FIG. 9 shoWs an example of an electro-mechanical
implementation of an isolated sWitch disclosed herein;
[0044] FIG. 10 shoWs an example of an electrical imple
mentation of an isolated sWitch disclosed herein;
[0045] FIG. 11 shoWs another example of an electrical
implementation of an isolated sWitch disclosed herein;
[0046] FIG. 12 shoWs an example of an electrical/elec
tronic implementation of an isolated sWitch disclosed herein;
[0047] FIG. 13 shoWs an example of an electro-mechanical
implementation of an isolated sWitch disclosed herein;
[0048] FIG. 14 shoWs an example of an electro-mechanical
implementation of isolated sWitch disclosed herein;
a user input device for example a keyboard, touch screen, etc.
In some embodiments, the peripheral device may be a USB
device, for example a USB “key” or mass storage device
(MSD), a USB Bluetooth device, a USB Wireless device or
any other knoWn USB device.
[0049] FIG. 15 shoWs yet another embodiment of a per
sonal device With a security sWitch disclosed herein;
[0050] FIG. 16 shoWs an example of electrical/electronic
implementation of an isolated sWitch With partial disconnec
[0032]
tion disclosed herein;
In some embodiments, the peripheral device may be
a non-USB MSD, a display, a memory, etc.
[0033] In some embodiments there is provided a method
for securing a personal device that includes a device core and
a peripheral device from unauthorized access or operation,
comprising the steps of providing an internal isolated sWitch
having operating functions that cannot be affected by either
the personal device core or the peripheral device, Wherein the
isolated sWitch includes an internal component located Within
the envelope or at least partially on the surface of the personal
device, Wherein the isolated sWitch internal component is
selected from the group consisting of a mechanical element
Without an electrically operated bypass and an electronic/
electrical element separated electrically from elements or
components of the personal device, and Wherein the isolated
sWitch is con?gured to act as man in the middle betWeen the
device core and the peripheral device, and using the isolated
sWitch to protect the device from unauthorized use or access.
BRIEF DESCRIPTION OF THE DRAWINGS
[0051] FIG. 17 shoWs an example of electrical/electronic
implementation of an isolated sWitch With isolated controller
disclosed herein;
[0052] FIG. 18 shoWs an example of electrical/electronic
implementation of an isolated sWitch With external and inter
nal components for mutual triggering of operation disclosed
herein.
DETAILED DESCRIPTION
[0053]
The invention discloses security systems and
devices for protecting personal devices and their users from
unauthorized access, operation, identity theft or information
theft. In particular, the invention discloses a security sWitch
that provides total protection of information related to the
personal device or a user of the device. In the folloWing
description, like elements appearing in different ?gures are
numbered identically.
[0054] FIG. 1 shoWs a ?rst embodiment 50 of a personal
device With a security sWitch disclosed herein. Personal
[0034] Reference Will be made in detail to preferred
embodiments disclosed herein, examples of Which may be
illustrated in the accompanying ?gures. The ?gures are
intended to be illustrative, not limiting. Although the inven
tion is generally described in the context of these preferred
device 50 includes a device core 100, an isolated sWitch 102
and at least one peripheral device 104. The dotted arroWs
indicate an optional direct connection betWeen device core
embodiments, it should be understood that it is not intended to
limit the spirit and scope disclosed herein to these particular
softWare and may include one or more controllers (e. g. central
processing units (CPUs)), one or more memory units and one
or more poWer management modules.
embodiments. The structure, operation, and advantages of the
100 and peripheral device 104 and/or betWeen device core
100 and isolated sWitch 102. Device core 100 operates by