A hacker secretly took over a computer server at the BBC, Britain's
public broadcaster, and then launched a Christmas Day campaign to
convince other cyber-criminals to pay him for access to the system.
While
it is not known if the hacker found any buyers, the BBC's security team
responded to the issue on Saturday and believes it has secured the
site, according to a person familiar with the cleanup effort.
A BBC spokesman declined to discuss the incident. "We do not comment on security issues," he said.
Reuters
could not determine whether the hackers stole data or caused any damage
in the attack, which compromised a server that manages an obscure
password-protected website.
It was not clear how the BBC, the
world's oldest and largest broadcaster, uses that site, ftp.bbc.co.uk,
though FTP systems are typically used to manage the transfer of large
data files over the Internet.
The attack was first identified by
Hold Security LLC, a cyber-security firm in Milwaukee that monitors
underground cyber-crime forums in search of stolen information.
The
firm's researchers observed a notorious Russian hacker known by the
monikers "HASH" and "Rev0lver," attempting to sell access to the BBC
server on December 25, the company's founder and chief information
security officer, Alex Holden, told Reuters.
"HASH" sought to
convince high-profile hackers that he had infiltrated the site by
showing them files that could only be accessed by somebody who really
controlled it, Holden said.
So far Hold Security researchers have
found no evidence the conversations led to a deal or that data was
stolen from the BBC, Holden said.
It is common for hackers to buy and sell access to compromised servers on underground forums.
Buyers
view the access as a commodity that grants them the chance to further
penetrate the victim organization. They can also use compromised servers
to set up command-and-control centers for cyber-crime operations known
as botnets, run spam campaigns or launch denial of service attacks to
knock websites off line.
The BBC offer stands out because the
media company is such a high-profile organization, Holden said. "It's
definitely a notch in someone's belt."
BBC has some 23,000 staff and is funded largely by license fees paid by every British household with a television.
Justin
Clarke, a principal consultant for the cyber-security firm Cylance Inc,
said that while "HASH" was only offering access to an obscure ftp
server, some buyers might see it as a stepping stone to more prized
assets within the BBC.
"Accessing that server establishes a
foothold within BBC's network which may allow an attacker to pivot and
gain further access to internal BBC resources," he said.
Media
companies, including the BBC, have repeatedly been targeted by the
Syrian Electronic Army, which supports Syrian President Bashar al-Assad,
and other hacker activist groups that deface websites and take over
Twitter accounts.
Last January the New York Times reported that it
had been repeatedly attacked over four months by Chinese hackers who
obtained employees' passwords.
© Thomson Reuters 2013