A lot of effort and expense in Internet security is directed towards 'keeping the bad guys out'. This is half the solution. What is overlooked, and equally critical, is how to keep the important data within. Internet content security is about keeping the 'bad stuff' on the outside of your network. Data leakage is concerned with keeping the 'good stuff' on the inside. Who are the primary culprits on data leakage - your own staff. Read on to see how leaks can occur and what measures you need to be taking to manage your environment.

What is Data Leakage?

There are two primary data leakage elements to be concerned with:

1. What data you should protect and
2. What constitutes a leak?

Data that is sensitive, or the 'good stuff', covers a range of corporate assets such as:

Intellectual Property (IP) - company secrets, product designs, mathematical formulas, research papers, source code, patents, schematics, recipes, proposals, reports, etc.

Commercial Information - financial reports, employee payroll, contracts, business plans, acquisition targets, product and marketing launch plans, budgets, customer databases etc.

Confidential Information - patient health records, customer financial information, legal contracts, employee resumes and agreements, reprimands, pre-release reports, etc.

How Does Leakage Occur

Emailing data to the wrong recipient or attaching the wrong file to an email.

Deliberately emailing client information to competitors by an employee.

Disclosure of confidential information.

Emailing confidential information in an un-encrypted format.

Internal staff using webmail or email that is not screened to discuss confidential subjects outside.

Data Leakage Is More Common Than You Expect

The issue with data leakage is not how common it is, but its severity, the nature of the data and how it has been leaked. With the span of data and the conduits for 'leakage', almost every company can attest to an incident of an internal security breach - willful or accidental. These breaches include loss of information and Intellectual Property theft. Interestingly, the majority of incidents came from inside their organizations.

One IDC study from late 2007 shows that 84% of all data leakage incidents can be attributed to employees. And the methods for stealing data increase - Blackberries, USB key drives, torrent uploads, and instant message file transfers. Companies should be more prepared than ever to monitor and control these activities.

What does Data Leakage look like when it is discovered?

Here are some recent media stories. Imagine putting your company name in place of the one listed. For example,

Apple suffered significant embarrassment after two employees revealed secret new product information on their personal