HSA210
THE WORLD’S FIRST
SECURE HEADPHONE DIODE
The HSA120 is the world’s rst device that fully secures stereo analog audio output stream to
prevent audio eavesdropping.
The product has passed extensive security evaluations
and its patented design oers security functions that
prevent all known methods of audio output channel
attacks for remote eavesdropping even when target
computer is infected or controlled by malicious code.
WHO NEEDS AUDIO SECURITY DIODES?
Computers connected to public networks and to the
internet can be easily hacked and controlled remotely.
Such computers having headphones connected are at
risk of becoming an eavesdropping bug. Attacker can
install a malicious code on the product that will turn
the connected headphones elements into dynamic
microphones. With proper audio driver modications,
this small signal may be amplied and ltered to enable
picking up surrounding conversation.
Then malicious code may easily compress
the audio data and stream it over the
internet to the interested remote attacker.
Computer
or Matrix
The attacker reconstructs the audio signal, enhance it
if needed and analyze it to recover valuable classied
information. Such attack can exist while the user is
completely unaware and it can even run undetectable
by anti-virus and intrusion detection programs through
the use of Zero Day Vulnerabilities.
One of the most common methods used to hack
computer audio systems remotely is through the use
of RAT (Remote Access Trojan). With the use of RAT
the remote attacker can modify the audio CODEC driver
functionality and switch the microphone input to the
headphones or line-out jack. To prevent all this, there is
a need for an ecient analog audio diode that can block
all usable signals from the headphones to the computer.
Secure
Headphone Diode
USB for Power
Audio
Audio
Speakers /
Headphone
PRODUCT HIGHLIGHTS
• Secure Headphone Diode
Preventing audio stream from headphones from owing back
to the computer audio jack. The only eective mean to protect
from remote eavesdropping through connected headphones
congured as microphone.
• Crystal clear audio quality
The HSA120 uses active diode circuitry to assure that audio
passing in the right direction is not distorted or attenuated.
Security features does not negatively aect audio quality.
• Crossed installation detection
The HSA120 can detect and prevent an attempt to connect it
to the microphone by the user or through audio CODEC driver
manipulation.
• Active anti-tampering
Battery backed active anti-tampering system prevents in-transit
tampering and enables full trust in the supplied product.
• No USB interface
Preventing the need to change existing audio equipment. Also
preventing the use of unsecure USB audio.
• Highest security by design
The HSA120 patented design offers the world’s first audio
security device. There is no other eective solution to prevent
audio attacks in the markets today.
• Easy integration
The HSA120 supports wide range of security products from HSL
and from other vendors including Secure KVM switches, matrix,
Secure KM etc.
SPECIFICATION
PART NUMBER HSA210
No. of Computers 1
HEADPHONE DIODE
Features
1 x USB Type-A to connect to computer
1 x 3.5mm stereo jack for headphones output:
Supports 4-64 Ohm headsets
Can drive 0.25W per channel into 8 Ohm load
Support audio output into higher impedance devices such as amplied speakers
Controls and indications
Self-Test push-button with
LED for self-test (green) and tampering indications (red).
Security Features
Independent/isolated microcontroller
Analog Audio Data Diode circuitry to prevent the use of headphones as dynamic microphone
Detection of crossed connection of plug inserted into a microphone jack or headphones jack with
changed role
Holographic tampering-evident labels
Active battery backed anti-tampering system to prevent physical tampering
Audio Features
Excellent at audio response curve
Frequency response: 100-20,000Hz
Diode reverse-ow attenuation: 32 ± 4dB
S/N ratio: More than 52dB
Audio Cards Supported
All AC’97 CODECs on-board or cards
HD Audio CODECs
Note: Professional PCI Cards and multi-channel sound cards are not supported
Computer Ports
1 x 3.5mm audio stereo plug for headphones or line output
1 x USB Type-B
PHYSICAL
Dimensions 55 (W) x 96 (D) x 21 (H) mm / 2.15 (W) x 3.77 (D) x 0.83 (H) inch.
Weight 0.1 Kg. (0.2 lbs.).
POWER REQUIREMENTS
Power
Yellow tip DC power jack 5V DC, 0.2A (maximum)
Wall-mounted power supply 90-240VAC input
ENVIRONMENTAL
Operating Temperature - 0ºC to 40ºC (32ºF to 104ºF);
Storage Temperature -20ºC to 60ºC (-4ºF to 140ºF)
Humidity
Operating – 20 to 80% non-condensing;
Storage – 10 to 90% non-condensing
Altitude 0 to 10,000 ft
CERTIFICATION
Security Accreditation CE, UL and cUL, Safety BSEN60950 / EN60950
GENERAL INFORMATION
Product life-cycle 10 years
Warranty 2 Years
HSA210
© 2015 High Sec Labs Ltd. All rights reserved. All trade names are trademarks or registered trademarks of respective manufacturers listed.
Specications are subjected to change without prior notice. Multiple patents pending. HDC09225 Rev 1.3
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