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Defining, Identifying and Limiting Cyber Crime
A vast amount of information is now stored on computer servers and databases, and it’s growing every day. Because that information has great value, hackers are constantly looking for ways to steal or destroy it.
Cyber crime is one of the fastest growing areas of criminal activity. It can be defined as any crime where:
• A computer is the target of the crime
• A computer is used to commit a crime
• Evidence is stored primarily on a computer, in digital format
Types of Computer Intrusions:
Computer intrusions can come from an internal source, such as a disgruntled employee with an intimate knowledge of the computer systems, or an external source, such as a hacker looking to steal or destroy a company’s intangible assets. Hackers use a variety of ways to steal or destroy your data:
• Viruses - A virus is a small piece of software that attaches itself to a program that is currently on your computer. From there, it can attach itself to other programs and can manipulate data. Viruses can quickly spread from computer to computer, wreaking havoc the entire way. In the late 1990s, email viruses became a popular method for hackers to infect computers. These viruses were triggered when a person downloaded an infected document. When the document was opened, the virus would send that document to the first few recipients in the person’s email address book. Some email viruses were so powerful that many companies were forced to shut down their email servers until the virus was removed.
• Worms - A worm is a computer program that can copy itself from machine to machine, using a machine’s processing time and a network’s bandwidth to completely bog down a system. Worms often exploit a security hole in some software or operating system, spreading very quickly and doing a lot of damage to a business.
• Trojan horses - Common in email attachments, Trojans hide in otherwise harmless programs on a computer and, much like the Greek story, release themselves when you’re not expecting it. Trojans differ from viruses in that they must be introduced to the system by a user. A user can knowingly or unknowingly run an .exe file that will let a Trojan into the system.
• Spyware - Spyware can be installed on a computer without the user ever knowing it, usually from downloading a file from an untrusted source. Spyware can be used by hackers to track browsing habits or, more importantly, collect personal information such as credit card numbers.
• Logic bombs - Logic bombs are pieces of code that are set to trigger upon the happening of an event. For example, a logic bomb could be set to delete all the contents on a computer’s hard drive on a specific date. There are many examples of disgruntled employees creating logic bombs within their employer’s computer system. Needless to say, logic bombs can cause serious damage to a company’s digital assets.
• Denial of Service (DoS) and Distributed Denial of Service (DDoS) Attacks - DoS and DDoS attacks are used to send an overwhelming amount of data to a target server, rendering that server useless. A hacker does this by gaining control of several computers and then sending a large amount of data to a target server that can’t possibly handle it. The result could be thousands or millions of dollars in lost sales for an online retailer and a complete loss of productivity for many businesses.
A computer intrusion could put your valuable digital assets at risk. That’s why your company should have the following measures in place to limit computer intrusions and protect your assets:
• Firewalls - Firewalls are pieces of software that control the incoming and outgoing network traffic on a computer system and decide whether it should be allowed through. Most computer operating systems now come with a preinstalled firewall for security. While they are not the be-all, end-all of preventing intrusions, they are a reliable start.
• Routers - Routers are pieces of hardware that keep unwanted traffic out of a computer system. They differ from firewalls in that they are stand-alone devices that must be bought separately—they are not included in an operating system.
• Anti-virus programs - As their name implies, anti-virus programs are designed to catch and eliminate or quarantine viruses before they can harm a computer system. Anti-virus programs run in the background to ensure your computer is protected at all times. While they are updated frequently, they may not catch the newest viruses that are floating around.
• Policies - Every company, no matter its size, should have policies in place to educate employees on the dangers of computer intrusions and ways to prevent them. Make sure your employees know not to open, click on or download anything inside emails from untrusted sources. Employees with an intimate knowledge of the company’s computer network should also be alerted of the potential consequences of hacking into the system.
Review Your Risks and Coverage Options.
A computer intrusion could cripple your company, costing you thousands or millions of dollars in lost sales.