Home affairs correspondent, BBC Scotland

David Murray’s workplace has a caution on its door: “Please be aware: child sexual abuse material being viewed in this room.”
The detective constable spends hours analyzing photos and looking at movies, the worst of that are past the stuff of nightmares.
He places himself via it as a result of he is aware of the task is essential.
The father of 2 younger boys admits it takes its toll, but he needs he had began the task a long way previous in his policing occupation to make a distinction.
He says it is price it, as a result of each week he and his colleagues are figuring out younger sufferers, and protective them from additional abuse.
Earlier this week, Police Scotland invited BBC Scotland News to witness its paintings demonstrating the exchange in offending behaviour for the reason that Covid pandemic, revealing that paedophiles have been making direct touch with youngsters on-line inside of 30 seconds of attempting.
‘On our doorstep’

David was once the primary sufferer id officer to paintings with Police Scotland’s nationwide kid abuse investigation unit.
After 4 years, he now has 3 colleagues and an ever expanding workload.
The unit is undertaking 700 inquiries a yr and executing 15 to 20 seek warrants each week, seizing dozens of units from the houses of suspects.
The task of the sufferer id officials is to inspect pictures and photographs discovered on those telephones and laptops, to take a look at to search out youngsters who have been abused.
According to Interpol, on-line kid sexual abuse is likely one of the uncommon crime spaces the place cops get started with the proof and paintings their as far back as the crime scene.
Once pictures are discovered, the sufferer id consultants take over, combing throughout the pictures with the target of eliminating the kid from hurt and arresting the abuser.
But their workload is expanding as speedy as they are able to get via them.
David says: “Four years ago we were identifying approximately 25 to 30 victims a year. We’re doing more than ten times that now.”
Shockingly, the sufferers are with reference to house.
“Last year we identified nearly 400 victims and 90% of those children are from Scotland.
“When I began, I believed it was once an issue that was once a long way away, however it is on our doorstep. It’s youngsters in our neighborhood.”
Horrifying distinction
The contents of the devices are uploaded to the UK-wide child abuse image database.
If they’ve been discovered before, they don’t have to be viewed again, but if they’re new, they’re classed as “first era” images and checked by David and his colleagues.
The grim reality of that is that much of the abuse takes place within households where the perpetrator knows the victim.
That means devices can include pictures of normal family life, providing a horrifying contrast to the images of abuse and vital information for the detectives.
“Essentially we commence on the lookout for clues within the photos as to the place this photos was once taken, such things as plug sockets or bits of clothes, possibly faculty uniforms and soccer strips, the rest that might possibly point out the place the kid lives,” says David.
“Numerous our identifications are constituted of non-indecent pictures.”

One victim was recently traced in Glasgow after a detective recognised a water tower in the background of a selfie.
Steps are taken to safeguard children who’ve been identified, in conjunction with outside agencies such as social work.
The most extreme images and videos viewed by David and his colleagues plumb the depths of depravity. He agrees they have to switch off their own emotions.
Police Scotland monitors the wellbeing of officers in this type of work and there are strict rules to limit how much time they spend looking at the material.
They’re not allowed to view it in the first or last hour of their shift, and one day a week is spent working from home, catching up on admin and emails.
“It’s only a case of prioritising and laying out your day,” David says.
“We get started with a briefing each morning and now we have were given somewhat a considerable workload, and we simply paintings our method via it the most efficient we will be able to.
“There are wellbeing measures in place and talking to counsellors and other people about what you’re feeling and seeing can help unlock things.”
Every week he and his colleagues stroll previous that caution on their workplace doorways.
“We are reviewing footage of something that’s already happened to these children,” says David.
“But when we identify them and put the safeguarding measures in place, that’s the most satisfying part of the job.
“I used to paintings in different spaces of policing, like severe and organised crime and drug enforcement however I will truthfully say that now roughly pales into insignificance.
“It doesn’t compare to putting measures in place to make a child safe.”