The cyber criminal suspected of hacking into the e-mails and cell phones of dozens of Hollywood stars pleaded guilty to nine felonies on Monday.

Christopher Chaney appeared in a Los Angeles court and pleaded guilty to identity theft, wire tapping and unauthorized access to a computer stemming from when he hacked into the e-mail accounts of celebrities such as Christina Aguilera, Mila Kunis and Scarlett Johansson, whose nude photos eventually landed on the Internet.

A year in the life of a celebrity would not be complete without a sex tape or a nude photo scandal, so RadarOnline.com has compiled a list of Hollywood's most salacious stories involving celebs in their skimpies in 2011.

Nude photos of actress Scarlett Johansson hit the Internet in September after her cell phone was hacked. The 26-year-old beauty anted up a couple months later admitting they were her, but were taken years ago for then-husband Ryan Reynolds. “There’s nothing wrong with that," she said. "It’s not like I was shooting a porno -- although there’s nothing wrong with that either.”

PHOTOS: A Look Back At The Year’s Top Nude Photo And Sex Tape Scandals

Other starlets such as Jessica Alba, Christina Aguilera , Miley Cyrus and Vanessa Hudgens were also victims of having personal nude photos leaked onto the web, causing the FBI to launch an investigation into a group of hackers, eventually arresting 35-year-old Christopher Chaney on charges of wiretapping and identity theft.

In January, Jersey Shore star Jenni "J-WOWW" Farley won a legal battle against ex-boyfriend Tom Lippolis, who wanted to release naked photos of the reality TV starlet. "Before she had her second breast augmentation, she was uneven, scarred, deformed and had tons of cellulite," Tom told RadarOnline.com.

Kanye West's ex-girlfriend Amber Rose had naked photos of herself leaked onto the Internet in February featuring several pictures of her with her breasts exposed through her clothes, and others of her completely naked.

Tinsletown ladies aren't the only ones wrapped up in nude photo scandals, as we learned in 2011, athletes and politicians like to snap X-rated photos of themselves too. Philadelphia Eagles star Michael Vick had to go on the defensive when a woman claiming to have "full frontal" photos of him was shopping them around to various media outlooks looking for financial compensation.

And former congressman Anthony Weiner was disgraced earlier this year when he posted a photograph showing a close-up shot of a man's bulging crotch, on his Twitter account addressed to 21-year-old college student Gennette Cordova. After the scandal broke numerous women across the country came forward claiming the married man had "sexted" them over Facebook or phone.

As for sex tapes, Kendra Wilkinson, Tila Tequila and Rihanna had that market cornered.

It was revealed in January that ex-Girl Next Door star Kendra had done a sex tape with a girlfriend named Taryn Ryan. "They were friends and were hanging out together, with their boyfriends," a source close to the situation exclusively told RadarOnline.com. "It's a long tape, about 45 minutes. And there is nothing left to the imagination."

Internet sexpot Tila has struggled with keeping numerous sex tapes under wraps, winning the rights to a tape she made with ex-boyfriend Francis Ten in January — and then by February a sex tape featuring the pint-sized star romping with two girlfriends leaked onto the web.

And finally, RadarOnline.com exclusively reported in August that porn magazine Hustler had obtained a sex tape featuring singer Rihanna getting frisky with rapper J-Cole. "Hustler is in possession of the Rihanna and J-Cole tape," said a rep for the adult company. "We have seen it and we do not know what we are going to do with it yet." Luckily for the sexy Caribbean queen, she escaped 2011 without the tape being released.

You can check out all the nude photo and sex tape scandals of 2011 here on RadarOnline.com.

The gossip continues to swirl around a girl named Blake Lively -- though she insists it’s much ado about nothing.

Reps for the 23-year-old Gossip Girl beauty, responding to a set of online photos of a nude woman an anonymous hacker claims to be the actress, denied that it’s her.

“The photos of Blake Lively which have just surfaced on various websites ... are 100 percent FAKE,” Blake’s camp said in a statement. “Blake has never taken nude photos of herself.

The blogger who published photos of nude celebrities obtained illegally by a ring of hackers has agreed to meet and cooperate with the FBI, but RadarOnline.com has learned exclusively there has been no contact yet.

The FBI have been investigating a group of people allegedly hacking their way into A-list email accounts such as Scarlett Johansson, Christina Aguilera, Jessica Alba and Vanessa Hudgens and stealing naked or risqué photos – many of which ended up on a Parisian blogger’s website.

PHOTOS: Sexy Sex Tape Celebs

“I’m just a blogger who loves celebrities as you know, who reposts pictures, mag scans and videos that I find on the net and that’s all,” the blogger who goes by  the screen name DeepAtSea wrote on his site.

The blogger accused of publishing titillating photos of nude celebrities illegally obtained by ring of hackers has gone underground, shutting down his site and deleting his social networking pages, RadarOnline.com has learned.

The FBI have launched an investigation to find the tech savvy group accused of stealing naked photos of Hollywood actresses including Jessica Alba, Scarlett Johansson, Vanessa Hudgens and Christina Aguilera.

PHOTOS: Sexy Sex Tape Celebs

Now the Parisian blogger, 'DeepAtSea' - who is famous for posting sexy snaps on his site  - has disappeared too.

The Daily first reported that it was 'DeepAtSea' who first posted the nude Renee Olstead -- images which show her playing with a sex toy.

Kelly Osbourne Thursday said she's the victim of an apparently sloppy cyber-thief, RadarOnline.com has learned.

"Someone has hacked my mail account the police are now involved who ever did this is in big HUGE trouble!!" the Dancing With The Stars vet Tweeted early Thursday on her account.

She added that "the ass that hacked my account had all my emails forwarded to his email address so I now know who it is I will find u & u will be arrested."