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Network Admin Sabotages ISP's Network After Getting Fired, Now Faces Jail

 By Catalin Cimpanu

Dariusz J. Prugar, 32, of Syracuse, New York, was convicted Friday, March 11, 2016, for illegally hacking into his former employee's computer network, deleting important files that caused the network to crash and remain down for an entire week.
in June 2010, Prugar, who was a network administrator for Pa Online, a Pennsylvania-based Internet service provider, was fired from his job by his employer.
Prugar sabotaged his former employer
Days later, wanting revenge against his former company, Prugar used his old credentials to log into Pa Online's computer network and proceeded to retrieve former scripts and software he worked on, but also inadvertently deleted some important files and folders in order to hide his tracks. Some of these operations caused side effects, such as the ISP's network crashing.
Prugar also installed other backdoors in the ISP's software, so he could later log in if he needed to.
The damage inflicted was so vast, that it took the ISP's employees, with the help of another company, an entire week to restore service, causing damages of $5,000 (€4,500). The downtime affected over 500 businesses and over 5,000 residential customers, some of which eventually changed their ISP.
Following this outage, Pa Online also had to rebuild its entire network, so Prugar, would not be able to log in again.
Prugar also tried to extort his former company
The ISP suspected foul play when they contacted Prugar, who built many of the ISP's software programs, to ask him for help in restoring the mess. Prugar told the ISP that he'd help them only if the ISP would return the proprietary rights for some scripts and programs back to him.
Piecing together his requests, the downtime, and his firing, Pa Online management contacted the FBI and requested help in investigating the issue.
Following the FBI's probe, Prugar was indicted in October 2012 and entered last week's trial with a non-guilty plea to charges of computer fraud, wire fraud, and extortion. During the trial, Prugar and the prosecution reached a plea agreement, and Prugar pleaded guilty to computer fraud while the other two charges were dropped.
For his crime, Prugar now faces a maximum sentence of 30 years in prison, but this is likely to be smaller since he has no previous criminal record. His sentencing date has not yet been set.

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