It is of course the sad part of using the computer in the public world. The sad part is identity theft, and this is what character Angela Bennett (played by Sandra Bullock) faces.
She loses a lot in this theft. Her husband's plane crashes outside LA--she herself almost does not take off from LAX to Cozumel, Mexico, after a big computer glitch in the airport, and after she does go to Cozumel to meet up with Max Devlin, whom she met through an online dating service, she finds out that it would not be the the best vacation of her life. Devlin's Mexican accomplice steals Angela's purse filled with important documents, only to get shot to death assassination style by Devlin, and then, by odd means, Devlin gets the disk out of the stolen possessions. When Angela realizes his bad side and knocks him out with a wine bottle and tries to escape by powerboat, she does find the disk, but does crash into the rocks during her attempted escape.
In the hospital, Angela bails out of the place and realizes that she can't go back to the Mexican hotel room, her calling card number is invalid, and she had to sign a fake temporary visa to get to the United States. And once she lands in the USA, she realizes that her car and her house is gone. And the worst thing is that Angela Bennett's identity was wiped out by character Ruth Marx, who masked Angela's name at Cathedral software, Angela's place at work, while still being pursued by the romantic Devlin. So she is being marked for death on both sides.
Angela had to do an inside job of stopping her devastating mess. She actually went to the place of work, and by a unusual ruse...a false fire alarm...she goes into Ruth Marx's computer, and realized that all of this deleterious stuff happening to her was choreographed by character Jeff Gregg of Gregg Microsystems, who was the helm of a mainframe computer security program called the Gatekeeper...the one that caused her the multitudes of malicious incidents.
After saving the disk contents, she rushes to the Moscone Convention Center at a computer convention, sends all of the stuff through email to the FBI at the Cathderal software computer station, and even though Devlin catches Angela in the act, Devlin makes the fatal mistake of pressing the escape button on the Gatekeeper mainframe because he loved Angela so much, disintegrating everything on the Gatekeeper program forever. And finally, Angela was able to fend off Devlin and his silencer pistol by killing him in self-defense by a fire extinguisher.
With that, Angela Bennett's good name and identity was finally restored.