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UBS Trial Aftermath: Even Great Security Can't Protect You




UBS Trial Aftermath: Even Great Security Can't Protect You
UBS Trial Aftermath: Even Great Security Can't Protect You



http://www.informationweek.com/news/showArticle.jhtml?articleID=191000063 

By Sharon Gaudin
InformationWeek
July 21, 2006

The computer sabotage trial of a systems administrator who was found 
guilty of attacking the network he had been hired to protect at UBS 
PaineWebber is sending out a sobering message, and one that can't be 
stressed enough: No matter what network security you have in place, it 
may not be enough to protect you from one of your own. It's almost a 
clich, but one that many companies still do not take seriously.

That, say security analysts and members of the government prosecution 
team, was the case for UBS, whose network was hit by a logic bomb in 
March of 2004. A jury this week found Roger Duronio of Bogota, N.J., 
guilty of two crimes: computer sabotage for building, planting and 
distributing the malicious code that brought down nearly 2,000 servers 
on the company's nation-wide trading network; and securities fraud. 
Duronio had worked at UBS as a systems administrator for about three 
years, and had become disgruntled when he found out that his annual 
bonus was going to come in smaller than he'd expected. Duronio is set 
to be sentenced on Oct. 30.

The UBS/Duronio case is a perfect example of the damage that can be 
caused by a knowledgeable insider with high-level access and an axe to 
grind. But that didn't stop the defense in this case from laying the 
blame squarely at the company's feet.

During the seven-week trial, Chris Adams, Duronio's defense attorney, 
painted an ugly picture of UBS' security infrastructure and practices. 
He repeatedly hammered on the fact that all the root users on the 
Unix-based system had the same password, and that UBS logs were unable 
to track which user was giving commands on the system as 'root'. He 
also focused on a back door found on a server in the main data center 
the year before the attack was launched.

The defense attorney went so far as to say UBS security was so riddled 
with holes as to make it impossible to tell what was happening on the 
system or who could have "masqueraded" as his client and planted the 
bomb.

But the forensics investigator who spent more than three years 
analyzing backup tapes, logs and source code from UBS' network says 
the company actually had a solid security setup. "In my opinion, it 
was strong," says Keith Jones, the government's star witness and 
director of computer forensics and incident response at Mandiant, an 
information security company, based in Alexandria, Va. "Not only that, 
but they knew where their weaknesses were and they were trying to 
address them. UBS did a lot of things right The defense raised the few 
issues that they could about UBS in order to make their network sound 
like the Wild West." (See Jones' Top Five lists for what UBS did 
right, and what the company could have done better.)

Alan Paller, director of research at the SANS Institute, says it's 
easy to take a few problems and make it look like a complete security 
fiasco. But that doesn't make it an accurate representation. "You can 
do 5,000 things right, and only one thing wrong and that's what 
they'll rake you over the coals with," says Paller. He adds that 
financial services companies, in general, tend to have better security 
than the average company, and UBS is known to be solid security-wise.

Was UBS' security bullet-proof? No. But whose is? The company could 
have put in place better monitoring and auditing of administrators' 
actions and system commands. There could have been fewer full-fledged 
root users, and there could have been separate passwords for each one 
of them. But even if any or all of these issues had been addressed 
before the attack, security analysts say a corporate IT professional 
with a good-size chip on his shoulder could still wreak a frightening 
amount of havoc and high-cost damage.

Beware the Insider

The real issue here, says Paller, is the insider.

A company employee is already inside the perimeter, where the vast 
majority of the protective technologies (firewalls, intrusion 
detection systems, etc.) sit. That same employee also knows what 
information is most vital to the company's ability to make money and 
sustain itself. He has knowledge of passwords, and he also probably 
knows what kind of machines and operating systems the company is 
running.

Now, imagine that employee works in IT.

An IT professional has all this information, plus he has access to the 
inner workings of the infrastructure. He has high-level privileges 
that allow him access to key servers and databases, and possibly even 
root-level access, which would give him all-encompassing power over 
the system.

Now, imagine that IT worker is angry at the company.

Companies need to be watchful about employees who have that much power 
over the health and well-being of the network, says Assistant U.S. 
Attorney V. Grady O'Malley, who helped prosecute the Duronio case, as 
well as the Tim Lloyd computer sabotage trial in 2000. Lloyd, a former 
network administrator at Omega Engineering Corp.'s Bridgeport, N.J. 
manufacturing plant, was convicted of launching a very similar attack 
on that company.

"Unfortunately, the message is still the same," says O'Malley. "You 
have to be incredibly vigilant when you're talking about trusting a 
system to people. You better be a lot more aggressive in [employee] 
analysis. Who is the person working on our network? Has he exhibited 
problems we should be worried about? Is he in a position to do damage 
if he wants to do damage?"

It's simply not fair to look at UBS, and say their system was flawed 
so they're at fault, says O'Malley. "Whether their system was flawed 
or not, they still had the Duronio factor," he adds. "He was a guy 
with a significant position. Regardless of the security measures you 
have in place, if the guy you're tasking to make sure the system is 
protected, wants to hit you, then it doesn't make any difference what 
you've done."

Paller agrees, adding that all too often corporate executives forget 
they're basically at the mercy of their IT workers.

Paller tells the story of the time he was visiting a company back in 
1969. Paller says he was walking with an IT manager who ran into a 
systems programmer and delicately asked him to go home and change into 
more professional clothes before he went to an important meeting. 
"This guy was still wearing pizza from last night's dinner," remembers 
Paller. "I said to him, 'Wow. Does that guy work for you? Why did you 
treat him with such kid gloves?' And he said to me, 'No. He doesn't 
work for me. He's a systems programmer. He owns me.' "

It's a lesson more executives should have had, says Paller, adding 
that IT workers wield a tremendous amount of power over an enterprise, 
and there are very few protections keeping them from using that power 
maliciously.

Building in Protections

So, if IT professionals need high-level system access, tools and 
privileges to do their jobs, how do companies restrict their ability 
to hurt the company while still empowering them to help the company?

There are technologies and process that can be put in place to help, 
says Ken van Wyk, principal consultant with KRvW Associates, LLC of 
Alexandria, Va. But that doesn't mean the company will be fully 
protected from an attack launched by an insider. It does mean that 
they won't be leaving their soft underbellies wide open to simple 
assaults.

Van Wyk says it's helpful to put checks and balances in place. One 
administrator can build code, but a second administrator would have to 
look it over and approve it before it could go live on the system. The 
problem with this, adds van Wyk, is that there are big costs 
associated with it. And in a time when most companies are looking to 
cut costs, this may not be a welcome suggestion in the boardroom.

Companies need to find a middle ground where they can put processes in 
place, but not break that bank doing it.

"I remember reading that UBS had a large number of root users on the 
system," says van Wyk. "Reduce that number, and put in place 
role-based privileges. That means that one administrator may be able 
to work with backup tapes but they aren't allowed to add code to the 
system. And have the event log monitored by someone [else]."

Andi Mann, a senior analyst with Enterprise Management Associates, 
which is based in Boulder, Co., says high-level access should be 
limited to as few people as possible, and everyone should have their 
own user ID and unique password to help keep a granular log of what 
users are making changes and issuing commands on the network.

Paller recommends that companies basically instill a healthy fear in 
their employees.

"You need granular logging and log monitoring that gives people the 
feeling that somebody omniscient is out there watching them all the 
time," says Paller. "And you have to demonstrate that omniscience a 
few times. Somebody visits a porn site, and you walk in and say, 'Do 
you really want to visit those sites from work?' Somebody else 
downloads something to a thumb drive, and you ask them where the thumb 
drive is. Let these stories spread through the system."

But Paller also says while it's important to carry a big stick, it's 
equally important to wave a carrot in front of employees at the same 
time. "You let them know you're watching them, and then you listen to 
them and treat them well," he adds.

Wolfe, the government prosecutor, says ultimately the majority of the 
burden falls on the company when it comes to going after an employee 
gone bad. The victim company has to call in law enforcement. The 
company has to bear the expense of providing evidence, like backup 
tapes for servers scattered across the country. And the company has to 
take it on the chin when the defense stands in open court and blames 
the victim, often using their own security reports against them.

The payoff of putting in place safeguards to help disarm IT workers is 
that there will be fewer security weaknesses for a defense attorney to 
trot out in front of a jury " and the media. But both Wolfe and 
O'Malley say it's critical for companies to suck it up, and call in 
law enforcement if they're attacked. Anyone thinking of launching 
their own assault needs to realize that companies will call in the 
feds, who have the ability to put them behind bars.

And O'Malley also says executives need to step it up when it comes to 
keeping an eye on employees who are full of complaints, or are on a 
bad streak with the company.

"Sure it will happen again," he says. "And in all likelihood it will 
happen because of an insider They always say, 'Oh, he was a trusted 
insider.' Bingo! That's the problem. He was a trusted insider." 


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