Criminal guards to lose licences 

MORE than 100 security guards found guilty of sex crimes, drug dealing and assault will lose their licences as part of the latest clean up the industry. But six years after a big industry shakeout, a hard core of criminals retain unofficial links with local security firms and doubts remain about security at airports and government sites.
A Herald Sun investigation has found:
REGULATOR Victoria Police will cancel the credentials of 105 private security licensees found guilty of serious crimes - such as drug dealing and sex attacks - under a new regulation scheme effective from July.
A GUARD was sacked from Melbourne Airport for failing to properly check freight for explosives.
THE tax office is investigating sham contractors and security companies notorious for going bankrupt and closing while owing tens of thousands of dollars to workers.

FORMER schoolteacher Karl John Aschhoff is frequently seen at the Wheeler's Hill offices of his former security company, ACCS, despite resigning over child pornography charges. ACCS did not return calls.
The Herald Sun can reveal Melbourne City Council renewed National Protective Services' $5 million contract for collecting coins from council parking meters last July, less than a month after a former NPS guard confessed to his role in a lucrative coin theft ring. MCC said NPS had introduced tough new controls. NPS could not be contacted.
One former security officer said Avalon Airport, which handles a million passengers a year, has only one guard patrolling the terminal, the carpark and sensitive sites that include the control tower between 10pm and 6am.
"If anything happens, they're alone. There is no one else," he said.
It is believed that at least one other guard is present at the airport at those times but does not patrol public areas. Avalon could not be contacted, but security operator Charter Resources' boss Mike Ramsey said: "There's adequate security at Avalon."
The death of cricket legend David Hookes in 2004 prompted an overhaul of private security regulations - 500 of the state's 30,000 private security operators were shown the door.
Fears that bikie gangs have infiltrated the $3 billion-a-year national industry are well-known, but experts believe the risk from unscrupulous employers is just as great.
"They drive down prices, forcing many security firms to engage in inappropriate and illegal practices that attract the wrong people with the wrong attitude being paid the wrong wages," Victorian Security Institute executive Brett McCall said.
The Australian Security Industry Association's Chris Delaney said: "Shonky operators choose to fly under the radar."
Guard union United Voice's state secretary Jess Walsh said: "The Victorian security industry is a snakepit."