The attack, which was first detected at 6am, saw the blocking of access
to the NAB’s site and slow log-ons for the bank’s internet banking
customers occured intermittently throughout the day, NAB spokesperson
Megan Lane said.

Thus
far, the NAB was not aware of the source or motivation of the attack,
Lane said, but the event had been referred to the Australian High Tech
Crime Centre (AHTCC) – a section of the Australian Federal Police.

The
incident was not the first time the NAB had been targeted by a DoS
attack, she said, but this instance was one of the “more significant”
efforts to block access to the company’s website.

AFP spokesperson Nicholas Pedley confirmed that a referral from the NAB
had been received and said the AFP was investigating this matter.

“The
AFP takes any activity of this nature seriously and is working closely
with the NAB to resolve the matter as quickly as possible,” he said.

In announcing the DoS attack, the NAB has renewed its campaign warning of the dangers of hoax emails, Lane said.

However,
the bank was uncertain as to whether the DoS attack was being used as a
pretext to soften up customers for a phishing attack through creating
the expectation of special emails from the bank explaining the
interruptions to the website.

“We just think it’s timely to remind customers that we will never ask them for their details,” she said.

As the use of the internet, online banking and transfer of valuable
information becomes ever more pervasive, so increasing numbers of
individuals and businesses are becoming victims of electronic crime.
E-crime, as it is more popularly known, comes in a variety of guises,
from identity theft and fraudulent financial activities through to
hacking into IT systems and launching denial-of-service attacks to
bring down IT systems.

In a recent survey of businesses some 83 per cent of the respondents
admitted to being victims of some form of hi-tech crime during the
year. Of these companies, 77 per cent had suffered a virus attack, 20
per cent a denial of service attack, 17 per cent financial fraud and 15
per cent saw a corporate website being spoofed.

Now Wales has taken the lead in fighting back against e-criminals
who are inflicting major damage on both businesses and the community
with the announcement of the E-Crime Wales partnership, a three year
action plan designed to protect organisations from on-line crime. This
will be achieved through a package of quality advice, awareness
raising, information sharing, staff training, tighter procedures and
vigilance.
Wales is the first region of the UK to develop such an initiative; it
is being driven by the E-Crime Wales Steering Group, compromising the
Welsh Assembly Government, the four Welsh Police Forces, the National
High Tech Crime Unit (now SOCA), lawyers Morgan Cole, HSBC and SERCO.

The central plank of the initiative will be the establishment of
the Multi-Agency E-Crime Wales Unit. The Unit will consist of three
permanent posts to manage and implement the E-Crime action plan for
Wales. There will also be a dedicated budget designed to enable the
secondment of individuals with specific expertise from the different
agencies for specific projects. In addition, up to five police officers
will be resourced as ‘regional investigators’ to investigate and record
incidents of e-crime occurring in Wales and to provide a focal point
for e-crime awareness activities.

Islamic
computer hackers tried to disrupt the Vatican web site earlier this
week, but failed, according to a report in the ANSA news service.

In
an online forum for militant Muslims, a group announced plans for an
assault on the Vatican computer network, which was said to be a form of
retribution for Pope Benedict’s criticism of Islam in his Regensburg
speech. Police later confirmed that there had been a concerted effort
by hackers to penetrate the Vatican site, but computer-security experts
were able to detect and repel the attack.

The
nature of the attempted attack was not clear. Some observers in Rome
believed that the Islamic group was planning a "denial of service"
attack, in which a web site is bombarded with many thousands of
simultaneous visits, overloading the available bandwidth and making it
impossible for others to reach the site.

In
fact the Vatican site has functioned normally, with minimal noticeable
slowdowns, through the week. Vatican security personnel are remaining
vigilant in case of another effort by the hackers.

A private airline which faced financial ruin after a hacking gang
brought its computers to a halt during three months of sustained
attacks, claims to have turned the tables on the hackers by installing
the latest high-tech defences.

The airline, which runs shuttle services between Italy and Albania,
narrowly survived after the gang bombarded the company’s systems with
millions of requests during its busiest booking period.

Small companies which rely on the web for business are particularly
vulnerable to denial of service attacks, but it is rare for firms to
talk publicly about their experiences. Online sports betting sites,
including Paddy Power, were hit by a spate of attacks two years ago from
gangs demanding the payment of a ransom.

In an interview with Comptuer Weekly, Albatros Airlines, said it lost
€20,000 a day after the attackers left its website inaccessible to
travellers and travel agents for weeks at a time.

"There was total disruption of sales. We could not sell anything
via our system, and had to wait for phone calls from travel agencies,"
said Erion Elmasllari, head of IT at the airline. "Basically our
sales were really dropping."

The airline, based in Tirana, first realised that something was amiss
in December when it received a cryptic e-mail which read, "I notify
you that attacks will not stop! but if you want to do a counterattack,
just tell me … for money everything can be done :)."

The attacks failed to register until May, when the company’s servers
in southern Italy were hit by a massive denial of service attack
launched from thousands of infected PCs controlled by the hacking group.

The company, which had a 2Mbytes line, increased its line capacity to
10Mbytes and moved its servers to a hosting centre in Northern Italy,
but the hackers responded by stepping up the intensity of their attacks.

At its peak, the hackers bombarded the company with messages from
7,000 computers, bringing down both the company’s systems and its
internet service provider.

"At one point we managed to set up firewall filters, so only the
agencies that work with us were allowed on our website. Then the
unthinkable happened. The providers in Albania changed their DNS
numbers, which meant the firewalls had to be reprogrammed, which took
another week," said Elmasllari.

The airline finally shifted its servers to a London hosting firm,
VistaLogic, which agreed to install specialist technology to protect the
servers from the attacks. The technology, supplied by Webscreen, is able
to distinguish between normal customer behaviour and an attack.

"After we started protecting them, the hacker started using
different strategies. He has tried every single strategy possible,
ranging from bot nets, synflooding, rests, and malformed packets,"
said Mustafa Ozkececigil, chief executive of the hosting firm..
"The worst attack we have had is 200Mbytes a second. That is a
substantial amount of traffic."

Andy Beard, advisory services director at Pricewaterhouse Coopers,
said it was rare for companies that have been hit by denial of service
attacks to talk about their experience.

"While the defences have got better, the determined attackers are
getting better. The sheer number of potentially compromised machines
[which can be used to launch an attack] is huge," he said.

Internet data center services provider IP-Converge Data Center, Inc. has signed a deal with security firm Prolexic to build Asia’s first large-scale anti-DDOS (distributed denial of service) platform to prevent IP-Converge customers from experiencing DDOS attacks.

According to a reports, DDOS attacks is the most common and worst type of network security problems global network infrastructures.

IP-Converge chief technology officer Warren Liu said the platform is scheduled to go live at the end of 2006 and will start in points-of-presence facilities that will be established by the company in Asian key cities, with the first one to be built in Hong Kong, China.

He said they want to integrate DDOS mitigation strategies in their network to prevent the operations of their customers from stopping when attacked by DDOS.