At previous hearing this year listed address as being 'whatever, whatever'

Today she was sentenced to eight months at a Youth Offender Institute

A schoolgirl whose vicious assault was seen in footage that went viral online listed her address as 'whatever, whatever, whatever, whatever, whatever' - today she was sentenced to eight months at a Young Offender Institution.

The girl, 14, who cannot be named, from Croydon in South London, admitted assault today at Croydon Youth Court.

The two-minute video has been viewed more than 2.7million times on Facebook since it was uploaded early on May 14.

Scroll down for video

A 14-year-old girl has been charged with assault by beating after a video of a young boy being repeatedly punched in the face was viewed more than 2.5million times on Facebook in less than a week

But it was not until that evening when it had been widely circulated that police were alerted. A 14-year-old girl was arrested and later charged.

Today she was sentenced to an eight-month detention and training order for breaching a youth rehabilitation order that was imposed on March 8 for GBH and witness intimidation, as well as the assault.

She wept and hugged her parents as she was taken away after being sentenced.

Magistrate Ken Ashken told her: 'This was an extremely unpleasant assault on a vulnerable 14-year-old who did not seek to respond in any way.

'In these circumstances, despite your young age and the undoubtedly good sides that you have within you, we consider that the offence is so serious, in regards to your previous offending, that a custodial sentence is justifiable.'

When she appeared at Croydon Youth Court on May 7 this year facing charges over a separate alleged assault, the court listing said her parent/guardian was 'ANON' and address was 'whatever, whatever, whatever, whatever, whatever'.

The girl is shown shouting foul abuse and punching a boy in the face in the mobile phone footage

The mobile phone footage that went viral shows a girl grabbing the sweatshirt of a teenage boy, who is several inches taller than her, and speaking to him threateningly.

She drags him around by his clothing while attempting to hit him and at one point appears to land a punch on the side of his head, causing an onlooker to remark: 'Oh, that's a connection'.

She repeatedly asks the boy: 'Are you gonna go get your cousin?', adding: 'Your cousin can't do dirt on me – you understand? Do you think you are a bad yute (a Jamaican slang term for 'youth')?'

Attempting to punch him in the face, she says: 'I don't want to have to bang you, you're lucky'.

Later she repeats a racial slur and asks the boy 'Are you trying to p*** me off?' before adding: 'I'm going to smack this yute.'

She mocks him saying: 'Are you going to cry? Are you going to cry?'

The girl refers to alleged drug dealing, asking the boy 'Where's your weed?' and appears to warn him off selling drugs on the local estate, saying: 'Don't p*** me off or I will have you on the floor, you understand? Don't even p*** me off.

'You best fix up, sort yourself out, and when my bredren [sic] or anyone on this estate comes for a draw you're not giving them dust, you understand?'

The young girl in the video appears to still be wearing her school uniform and has her hair in plaits

The footage shows a girl grabbing the sweatshirt of the boy, who is several inches taller than her

The girl, who cannot be named for legal reasons, will appear at South London Magistrates Court tomorrow

One of a group of youths recording the video warns the girl that she could get in trouble. A girl's voice says: 'You're going to have this on your phone, you' re stupid if you do it.'

Later an onlooker is heard to say: 'I'm not watching it, I'm not watching it, because I tried to tell (her) but she ain't listening, she's gonna get herself put in jail or something.'

The video was posted on the Facebook page 'Young Rich Britain' where hundreds of viewers left comments praising the boy for not retaliating during the 'humiliating' attack.

They also condemned the girl's actions and she was widely mocked for using street language, particularly Jamaican slang terms.

One Facebook user said: 'So much respect for that young man, what a star, certainly been brought up the right way. As for her, she is disgusting, (her) parents must be so proud she has turned into a vile little trollop.'

Another said: 'Disgraceful... I would be ashamed if she was my child… she's a bully.

'I really respect that lad for keeping his cool however it's so frustrating that she thinks that she can walk all over him like that, and then she'd probably complain if he defended himself and hit her back.'

Viewers identified the area where the attack took place as Selsdon, Croydon.

Police were alerted to the video at around 6pm on May 14, around 15 hours after it was posted online.