Children's charity Barnado's and Microsoft have released an app to help children learn how to spot the signs of sexual exploitation.
Microsoft's XBox One and Sony's Playstation 4 face off for the top console spot this Christmas, but how do their features compare?
These are dramatic new steps which will make the internet safer and better for children, a leading Internet safety expert writes.
Armoured vehicles delivered Microsoft's new Xbox One to a launch event in New York as US fans queued up to buy the eagerly-awaited console, which went on sale at midnight.
The Times Square event followed the same theme as an earlier launch in London, with actors dressed as characters from the Xbox One game "Ryse: Son of Rome" and as zombies from Dead Rising 3.
Dedicated gamers donned gloves and hats as they brave hours in New York's chilly autumn temperatures to ensure they got hold of the $500 (£309) console.
Gamers in the US took to Twitter ahead of the midnight launch of the Xbox One in New York and Los Angeles.
Microsoft's eagerly anticipated new console went on sale in London at 12pm.
I bet the First guy in line for the XBox One in Times Square is either A. unemployed B. Single or C. All of the Above.
Only thing that's preventing me from running out and grabbing an Xbox One tonight is that $500 price tag.
This launch special for Xbox One just feels awkward..
Microsoft's corporate vice president Phil Harrison - a former director at Sony - described the new Xbox One as "built for the future" as the eagerly awaited console hit the market.
– Phil Harrison, Microsoft
Xbox One is a complete, all-in-one system which has the best games, the best online service in Xbox Live, the best entertainment experiences and is built for the future.
With the strongest line-up of games we've ever seen for a new console, pre-orders from fans across the UK are at unprecedented levels...
The games industry is evolving and growing fast, and we are proud to have so many British developers and creators helping to drive the new Xbox One era.
Thousands of gamers flocked to the midnight launch of Microsoft's hotly-anticipated Xbox One in London, as the technology giant hailed the new console "the best".
Singers Plan B and Katy B provided the entertainment, along with performers dressed as zombies from Dead Rising 3 and a Roman legion from Ryse: Son of Rome, while England footballer Andros Townsend battled it out on stage with a competition winner.
With the launch of Sony's PS4 next week, Microsoft has a head start on its rival in the run-up to Christmas.
"We're proud and excited that Xbox One is going to be the biggest launch in Xbox history," Microsoft's Phil Harrison said.
Gaming enthusiasts have flocked to central London for the launch of the hotly-anticipated Xbox One.
With the launch of Sony's PS4 next week, Microsoft has a head start on its rival in the run-up to Christmas for its all-in-one entertainment device.
The Xbox One - which goes on sale at midnight - costs £429.99
London's Leicester Square was transformed into a fantasy world overrun by zombies from and a Roman legion from Xbox games.
Microsoft's Nicola Hodson said online child abuse content is "an evolving problem", making it "difficult to say whether anyone has done enough".
Ms Hodson told ITV News: "There is always much more to do, so we welcome the focus and we will continue to work hard on this area.
"We're very, very passionate about keeping children safe".
Prime Minister David Cameron admitted there is "still more to be done" to remove child abuse images from the internet, but stressed "huge progress" has been made.
Speaking after a summit at Downing Street, Mr Cameron said: "It's worth remembering we were told that cleaning up searches when people search vile terms, we were told it couldn't be done and we were told it shouldn't be done, for reasons of free speech.
"Well, we're now being told by the industry it can be done and it will be done."
Google's head of communications in Europe said there is "more that can be done" to prevent child abuse images being accessed online via search engines.
Asked why it had taken Google so long to tackle the child abuse content available, Peter Barron told ITV News social affairs editor Penny Marshall, "We have been working on this for many years".
"We've taken proactive action to identify this material online and remove it and report it, but there is more that can be done", he continued.
"Over the last few months we've had around about 200 people working on this to find new ways to deal with the problem".
Child protection expert Mark Williams-Thomas said the Prime Minister should be clear that today's announcement is more about stopping children and young people accessing child abuse images "rather than tackling offenders accessing this material".
However, Mr Williams-Thomas acknowledged on Twitter that it was "a good step forward":
The announcement this morning by the PM that Google will introduce key word filtering & video DNA is a good step forward.
2 key distinctions-PM focus is more abt stopping children/y.people accessing child abuse images . Than tackling offenders accessing material
It is good that children/y.people are a focus - but this is what the PM should be being clear about. Less spin PR more clear strategy
Microsoft said "increased collaboration" is key to combating online child abuse content, adding, "We need to tackle the core problems of creation, distribution and consumption".
A spokeswoman said: "Microsoft has long been focused on disrupting child sexual abuse, including developing PhotoDNA to strike at the heart of the repeated sharing of the same images time and again across the web.
"Increased collaboration between Microsoft, the Government, CEOP, the IWF, Google and others in the industry is the best way to combat this vile content. Today is a good step forward in this combined effort".