ORLANDO, Fla. -- FBI agents raided a University of Central Florida residence hall and arrested a student that they accuse of perpetrating a cyber attack.Federal authorities said the student, 21-year-old computer engineering major Scott Arciszewski, is affiliated with the online activist group Anonymous. The group has been linked to hacking attacks on a number of Orange County websites.The FBI said it's looking into whether there's a connection between Anonymous and the UCF student.Arciszewski told WESH 2 News that his federal public defender told him not to speak out publicly, but he did say that he's extremely stressed by the ordeal.He's one of 16 people arrested in raids across the country on Tuesday who are accused of cyber attacks."I was completely surprised, being honors students and athletes, not a lot of bad things happen in the towers," said UCF student Dan Chesney.The UCF honor student said he was stunned when FBI agents in bulletproof vests swarmed the third floor of the Tower Three residence hall and arrested his fellow classmate."They came and knocked on his door, and there was a big ruckus," said a student who witnessed the arrest.Arciszewski is accused of hacking the website infragardtampabay.org. It's an FBI-affiliated site that works with businesses, Homeland Security and law enforcement to protect against counter-terrorism and cyber-crimes."It's illegal, so he shouldn't have been doing it," said Chesney. "At the same time, kudos to him for having the skill as a college student to hack into some major corporation's website."On Arciszewski's website, Kobra's Corner, he brags how the site isn't safe and said he penetrated it within five minutes. Federal agents said he uploaded three files, damaged the server, and then posted step-by-step instructions for others."They kind of need to step up their security, if that's the case," said Chesney.Arciszewski also tweeted about the hack-job with friends with possible ties to Anonymous.FBI agents arrested 14 members across the country accused of hacking the PayPal website in the Tuesday raids.Recently Anonymous claims it set its sights on taking down central Florida-related websites. They said it's retaliation for Orlando Police arrests of Food Not Bombs members feeding the homeless in Lake Eola.Agents said the UCF student even sent a tweet to the FBI saying that the website he hacked is one heck of an exploit. Arciszewski told WESH 2 News that UCF is not kicking him out of the campus dorms. The school will only say it's cooperating with the FBI investigation.