1.   At the same time, a hacker can show the owners of the system that their security can be breached.

2.   One hacker Web site shows a small figure urinating over the names of customers who ordered equipment but reneged on paying.

3.   But hackers have always shown resilience in the face of attempts to defeat them.

4.   The hearing will include a demonstration in which hackers will show how easily they can penetrate government networks by using widely available tools.

5.   With local smart card hackers already showing their prowess, they feared the IDs presented too tempting a target.