ARLA/CLUSTER: Vídeo demonstra como aceder a um vulgar telemóvel através da rede GSM

[João Costa > CT1FBF]

Researchers hack air-gapped computer with simple cell phone

THE MOST SENSITIVE work environments, like nuclear power plants, demand the
strictest security. Usually this is achieved by air-gapping computers from
the Internet and preventing workers from inserting USB sticks into
computers. When the work is classified or involves sensitive trade secrets,
companies often also institute strict rules against bringing smartphones
into the workspace, as these could easily be turned into unwitting
listening devices.

But researchers in Israel have devised a new method for stealing data that
bypasses all of these protections—using the GSM network, electromagnetic
waves and a basic low-end mobile phone. The researchers are calling the
finding a “breakthrough� in extracting data from air-gapped systems and say
it serves as a warning to defense companies and others that they need to
immediately “change their security guidelines and prohibit employees and
visitors from bringing devices capable of intercepting RF signals,� says
Yuval Elovici, director of the Cyber Security Research Center at Ben-Gurion
University of the Negev, where the research was done.

The attack requires both the targeted computer and the mobile phone to have
malware installed on them, but once this is done the attack exploits the
natural capabilities of each device to exfiltrate data. Computers, for
example, naturally emit electromagnetic radiation during their normal
operation, and cell phones by their nature are “agile receivers� of such
signals. These two factors combined create an “invitation for attackers
seeking to exfiltrate data over a covert channel,� the researchers write in
a paper about their findings.

The research builds on a previous attack the academics devised last year
using a smartphone to wirelessly extract data from air-gapped computers.
But that attack involved radio signals generated by a computer’s video card
that get picked up by the FM radio receiver in a smartphone.

Read the full story at:
http://www.wired.com/2015/07/researchers-hack-air-gapped-computer-simple-cell-phone/
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