In the same manner, a Web site becomes less secure the more Internet connections it has. But it's worthless because no one can get in. You have to open a door. Just as security systems and guards protect homes and offices, security software watches activity on a computer server and limits access to authorized users through passwords. Internet security devices become obsolete just as physical ones do.
Burglars find ways to break in without triggering alarms, and hackers refine their techniques.
Mr. Hartzfeld said much of the public has the wrong idea about hackers and Internet security professionals alike. He may do it over six months. And to implement a successful Internet security system, Mr. Hartzfeld said he must be deliberate and methodical. Attacks launched by teen-agers or novice hackers are easily traced. It's the pros who constantly change their ways that concern Mr. Hartzfeld.