Are Your Employees Unknowingly Opening the Door for Hackers?
A man calls the receptionist at a competitors company and
asks for the name of the Sales Manager. The receptionist says the person you
are looking for is John Smith. Later, the man calls back to the same company and
says he needs to speak with the IT helpdesk. When the helpdesk operator answers
the man says “Hi, my name is John Smith and I seem to have forgotten my new
password. I am on my way to an important meeting can you reset it right away?”
In an effort to help the user regain access to the system, the helpdesk operator
resets the password and tells the man the new password. The man then accesses
the employee area of the corporate website and logs onto the email system of John Smith and subsequently reviews all of Mr. Smith’s contact information and
correspondence.
The above scenario is not over-simplified and is being
playing out in corporations worldwide every day. The names, pitch, and access
methods vary, but the underlying attack method is the same. If you ask, it is
quite possible you will receive. It is the overlooked security threat called
Social Engineering. At BAI Security we regularly perform Social Engineering
audits and we consistently find companies that are vulnerable. Social
Engineering is a way of hacking corporate users instead of corporate networks
and it is not uncommon or even difficult. In fact, it doesn’t really require
any technical knowledge or elaborate planning as demonstrated in the above
scenario. Not all hackers are sitting at home with his/her computer hacking
into the corporate network or trying to crack executives’ passwords. Sometimes
all they have to do is call up and ask for it!
The latest survey by the Computer Security Institute (CSI)
and the FBI shows that 90% of the 503 companies contacted reported a break-in
within the last year. While the number of networks being hacked is on the rise,
the overall growth is not limited to the lack of security devices or personnel
protecting the network. Social Engineering is also becoming a high-growth area,
because it is not limited to only those technical savvy computer engineers.
The
Who,
What,
Why, and
How
The growth and use of email in the corporate world has
sky-rocketed. This increased usage has made the email system a new holding
place for a myriad of proprietary or otherwise confidential information. In
addition, the need to access that information has driven companies to providing
external access to their email systems as a normal part of doing business. This
makes the email system a desirable target for Social Engineering attacks. Some
of the most common Social Engineering attacks against email systems involve very
similar methods mentioned above.
The corporate Extranet is also a target to would-be
hackers, because of the wealth of information on company employees, events, and
POLICIES. The very policies that are put into place to help protect company’s
assets are often used against it. The outsider can follow the policy manual as
a roadmap on how internal employees are suppose to act in regards to certain
security procedures. References to corporate policies and procedures are
further used to gain the trust of unsuspecting internal employees to launch more
sophisticated Social Engineering attacks.
The single sign-on approach to user authentication is
increasing in popularity, because of the confusion of multiple logons and
passwords. However, the risk associated with a single sign-on without
additional methods of verification are proven by the following scenario. An
individual that uses the above or similar Social Engineering attack and gains
the user name and password of an internal employee now has access to all of the
externally accessible systems as the original user. Actually, the risk is often
much more, because in many environments Virtual Private Networks (VPNs) are used
to gain direct access into the internal network. Since VPNs do not always
properly restrict users to particular systems the same user name and password
could be used to gain full access to the internal network itself. This would
then allow a hacker the ability to launch more sophisticated attacks against
other key systems that the original user may not have even had access to
directly.
In conclusion
Even with a high-level overview as discussed here, the
risks associated with Social Engineering are clear. It is vitally important for
those responsible for information security to identify the risks within your
environment by including Social Engineering within any ongoing auditing
program.
Testing the technology associated with your information
security program with at least annual audits has become a standard. Including a
Social Engineering test within the audit process will also help to identify the
risks associated with internal employees surrendering ultra sensitive
information directly to hackers. An additional byproduct of this form of
auditing is the ability to judge the effectiveness of your information security
program as it relates to divulging logon name and/or password information.
Kevin Mitnick,
a well know computer hacker, was placed in solitary confinement in
1995, because of fears that he had exposed one of the biggest new security risks in corporate networks. Of course, it is well documented that
one of Kevin’s talents was his ability of coaxing passwords out of unsuspecting
people. In fact, many said that Mitnick’s abilities spooked the Judge assigned to the case into physically separating him from any
person he could “influence”. Even today Social Engineering does not get the
attention it should considering the impact, frequency, and ease at which these
attacks are being carried out.
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