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Internet Business Use
The Emerging Threats to Corporate Computing
Most companies view security threats from an outside-in
perspective: How can we protect our corporate computing environment from risks and threats from the outside world? Organizations deploy or configure firewalls, demilitarized zones, and intrusion detection
systems, and implement a myriad of other security devices in an attempt to stop intruders from entering their corporate network.As we've discussed, there are significant emerging threats to enterprise
security that are not being introduced from external, unknown sources, but from employees themselves. Its critical that companies acknowledge these inside-out risks. Instant Messaging Less expensive than the phone and quicker than
even email, instant messaging (IM) allows employees to easily communicate with other IM program users in a kind of private chat room. Most employees are using public IM chat tools from AOL, MSN, and Yahoo!
to communicate with both colleagues and company outsiders. This presents significant challenges to IT organizations because, in addition to being a potential productivity drainer, public IM tools can relay
company-confidential information over the Internet and contain exploitable vulnerabilities, making them a serious security threat to an organization. Peer-to-peer applications Peer-to-peer (P2P) applications like Kazaa
make it possible for a user on one computer to directly access files, such as MP3 musicon another users computer anywhere on the Internet and download them. P2P application use is extremely popular2 and not
solely a home-use phenomenon. A survey by AssetMatrix in July 2003 showed that 77% of companies had detected at least one P2P file-sharing application on their network3.With little, if any, business
justification for P2P networks in the enterprise, organizations face a significant security threat, in addition to the threats of network bandwidth misuse and legal liability. Forty-five percent of the
executable files downloaded through Kazaa, the most popular file-sharing program, contain malicious code like viruses and Trojan horses. (TruSecure study, January 2004) In October 2002, the RIAA, along
with the Motion Picture Association of America, the National Music Publishers Association and the Songwriters Guild of America, sent letters to Fortune 1000 companies warning that they are at risk when
employees illegally distribute copyrighted works over corporate networks. (Raleigh News & Observer, January 14, 2004) 2 Kazaa, the most popular gnutella-based P2P network, is the most
searched term on the Internet, as well as the most downloaded executable. Search term statistic as reported by Yahoo!:
http://search.yahoo.com/top2003. Download statistic as reported by Downloads.com in December 2003.3 Corporate P2P Use Is
Common, Study Says, c|net News.com, July 16, 2003. Websense, Inc. 3
Spyware and malicious mobile code Spyware is any technology used to gather information about users or their
activities, secretly or without consent, and relay that information to interested and potentially undesirable third parties over the Internet.These programs are often downloaded automatically and
unintentionally from Web sites or P2P sites. Examples of spyware include adware, Web bugs, and tracking cookies. Although many of these programs are harmless and simply annoying, some more insidious
spyware, such as keystroke loggers, records and transmits information about keystrokes and specific user actions on the computer to outside third parties. Since keystrokes and user actions can include
usernames and passwords, bank account numbers and PINs, or other access codes, these programs pose a significant security threat to the enterprise and, depending on the information relayed, may present a
legal concern for organizations as well. Similar to spyware, malicious mobile code (MMC) can infect an end-users computer simply by visiting the URL to the Website that distributes it. Perhaps the most
well known example of this type code was the Nimda worm that spread throughout the Internet in 2002. Among other means of distributing itself, Nimda could infect computers that merely visited Websites which
had its payload embedded as an ActiveX component. MMC includes any executable delivered via a Website that changes system settings without the end-users knowledge or approval. The consequences of MMC are as
variable to an organization as the nature of the payload and can result in anything from a security threat to a legal liability concern.
Employee hacking Organizations have always been concerned about the ability of outsiders to hack into their
computing environments and gain access to proprietary information. Interestingly enough, the threat of hacking is primarily a threat from the insider. In fact, security experts often say that over 70%
of hacking exploits are from insiders.4 Employee hacking is a bigger problem than ever before, because dangerous how-to information is now so readily available and easily accessible over the Internet. Newly
available hacking portals target novice users and offer tools such as scripts and programs, as well as message boards that would-be hackers can use to learn about and discuss their hacking exploits.45%
of companies have suffered an unauthorized access by an insider in the previous 12 months. (Source: 2003 CSI/FBI Computer Crime and Security Survey) Motivated employees can find ingenious
ways to access information to which they should not be private customer data, confidential corporate information, or intellectual property, to name just a few. And employees willing to go to such lengths to
obtain this type of information almost never keep the information to themselves, thus presenting a legal risk from information breach to compound the security risk. Streaming media Streaming media includes interactive and
high-bandwidth applications that use the Internet to run. Media players, Internet radio, and Internet television are three examples. While it may be useful for employees to view Web-based training sessions
on their office computers, it is difficult to see the company benefit of employees watching concert highlights or clips from their favorite TV shows. When used inappropriately,4 Based on informal
consensus. An Information Week Global Information Security Survey in November 2003 found the figure to be 30% based on a formal survey of security experts. Websense, Inc. 4 streaming media also presents a risk to organizations in the IT resource domain, as precious network bandwidth is consumed by non-work-related activity, thus adversely impacting business-critical
applications. As seen from the discussion above, these threats can pose risks to employee productivity, legal liability, IT resource use, and security. The following table summarizes the many activities
and actions that employees engage in and assesses the corporate impact and risks associated with them. Emerging Threats in Employee Computing Activity/ Application Threat Corporate Impact/Risk
Introduction of viruses, worms or Trojan horses to corporate network Security (high)Interception of confidential information (customer, privacy, IP, financial disclosure) Security (low) Introduction of
illegal or inappropriate content into corporate environment (through file attachments) Legal liability (moderate) Instant messaging Employee distraction Productivity (high)
Introduction of virus or worm into corporate network Security (high) Lawsuit from illegal exchange of copyrighted digital material on corporate network Legal liability (low) Saturation of network
bandwidth (possibly impacting business-critical applications) IT resource (varies) Peer-to-peer application use Probability of pornography (possibly child porn) existing on the corporate network Legal
liability (high) Interception of system password through keystroke logging program (possible use in identity theft) Security (low but increasing)
Transmission of sensitive data to outside party Security (high) Spyware and malicious mobile code Non-optimal utilization of network bandwidth or desktop CPU cycles IT resource (high)
Unauthorized access to systems by an insider Security (high) Confidential customer information security breach (possible use in identity theft) Security (varies)
Theft of corporate secrets or valuable confidential information Security (varies) Legal liability from affected outside parties Legal liability (moderate)
Damage to computing systems by hacker IT resource (moderate) Employee hacking Public disclosure of executive compensation packages and bonuses Security (low)
Saturation of network bandwidth IT resource (varies) Employee distraction and loss of productivity Productivity (moderate) Streaming media Legal liability from viewing of or listening to illegal
copyrighted movie or material Legal liability (low) Desktop incompatibilities IT Resource (high) Installation/execution of unauthorized applications Use of pirated/un-licensed software programs Legal
liability (high) |
