Little Miss BumBum breaches security
Organisers are left red-faced as various incidents reflect lapses in protective measures
A "Miss BumBum" who claims she slept with Cristiano Ronaldo, a Chilean stadium invasion and a Lionel Messi fan who snuck into Argentina's training camp, have cast an unflattering spotlight on World Cup security.
Just when Brazil was soaking up praise for a relatively snag-free tournament, the three security breaches gave organisers some of their most embarrassing moments yet and prompted football's world governing body Fifa to reassess its measures.
In the Miss BumBum incident, a former contestant in a pageant to choose Brazil's sexiest female posterior, was frog-marched out of Portugal's training ground by security staff just minutes before Ronaldo and his team took to the pitch.
Andressa Urach and the World Player of the Year have a history - or so says Urach.
British newspapers last year reported claims from her that Ronaldo, 29, had cheated on his girlfriend Irina Shayk with her.
At the time, the Portuguese superstar angrily denied the claims, tweeting that he was "deeply outraged by a situation intended, in vain, to affect my personal life".
Urach, a co-host on a Brazilian variety programme called the Muito Show, has been determined to get Ronaldo's attention at the World Cup.
Last week, she reportedly welcomed him to Campinas, the southeast Brazilian city where Portugal are based, by painting his green and red shirt onto her naked skin and holding up a sign that said "Kisses C. Ronaldo."
She appeared to be planning another media stunt. She had a microphone and was apparently wearing official accreditation.
But, surrounded by a knot of photographers, she was unceremoniously ushered from the premises.
After the incident, she tweeted: "I came to give good luck to C7 [Ronaldo], and was removed from the pitch and they took my press credentials. Where is the freedom of expression?"
Soon after Urach's ejection came news that Brazilian security services had detained a man who sneaked into Argentina's training camp in Belo Horizonte to seek star striker Messi's autograph.
The 33-year-old Brazilian, who had received a T-shirt from Messi last week after cleaning his boots, was seen crying as he was led away. He told police he just wanted to get the shirt signed.
Security woes only got worse when scores of ticketless Chilean fans gate-crashed Rio de Janeiro's Maracana stadium, breaking through fences in a desperate rush to see their team play Spain.
The fans, many wearing Chile's red jersey, shattered a glass door at the media centre, broke fences and partition walls, and swarmed into internal corridors before guards stopped them. Officials arrested 85 people and ordered them to leave Brazil.