Facebook deploys PhotoDNA to scan for child abuse material

Powered by SC Magazine
 

Joins Microsoft in image-matching initiative.

Facebook has deployed image-matching technology PhotoDNA to scan users’ photos for evidence of child exploitation.

The social network announced last Friday that it would use the hashing technology to prevent child abuse material from being uploaded and distributed by users.

“We intend to put that technology to use against between two and three hundred million photo images that are uploaded every day,” Facebook assistant general counsel Chris Sonderby said.

“The technology will allow us to block their upload, prevent their distribution and the re-victimisation of the children who are depicted in those images, and also allow us to refer and report those incidences to law enforcement so they can take immediate action.”

PhotoDNA was developed by Microsoft and Dartmouth College in 2009 and relied on a database of sexual abuse images from the US National Center for Missing and Exploited Children (NCMEC).

The technology calculated and compared digital signatures, or hash values, of images to identify matches even if the photos were resized or altered.

According to Dartmouth computer scientist Hany Farid, PhotoDNA analysed one image in four milliseconds and detected 99.7 percent of matches in tests.

It had a false positive rate of between one in two billion and one in ten billion, Farid said, noting that it had not falsely identified a single image in the two billion MSN images scanned.

“It is a very efficient technology; it will not slow down the general use of the network,” he said.

Bill Harmon, associate general counsel of Microsoft’s Digital Crimes Unit, said Microsoft had removed 1,000 images from its SkyDrive cloud storage service since February, based on 4,000 NCMEC signatures.

Microsoft also compared Bing image search indexing against 10,000 NCMEC signatures, and had identified 1,500 addresses of online child exploitation images to date.

NCMEC president and CEO Ernie Allen said Microsoft’s PhotoDNA beta tests had led to arrests in New Zealand.

He hoped to establish partnerships with more online services, especially those that enabled social media and photo sharing.

Copyright © iTnews.com.au . All rights reserved.


Facebook deploys PhotoDNA to scan for child abuse material
 
 
 
Top Stories
Change is the only constant at iiNet
iiNet's Matthew Toohey is trialling IBM's Watson - between preparing for an acquisition and making sure Netflix doesn't swamp the network.
 
Why straight-through processing is the holy grail for banks
Big benefits from stripping away human intervention and digitising processes.
 
CBA sued over frozen millions in IT bribery scandal
Eric Pulier's not-for profit lodges lawsuit in US.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
New features are coming to Outlook.com
May 27, 2015
Outlook.com, thanks to its predecessor Hotmail.com, is one of the world's major webmail services ...
Windows 10 to feature integrated apps for Android and iOS
May 27, 2015
Microsoft reveals multi-platform Cortana connectivity for Windows 10. What the heck is that, and ...
Microsoft launches Office for Android preview
May 22, 2015
Microsoft has launched a preview of Office for Android smartphones. Pre-release versions of ...
Microsoft is working on an iOS email chat feature called Flow
May 22, 2015
Microsoft is working on a new chat app, but at the moment we know more about what we DON'T know, ...
Windows 10 free upgrade: Microsoft details who gets what
May 22, 2015
Microsoft was meant to be streamlining its OS with Windows 10, so why is upgrading so confusing? ...
Latest Comments
Polls
Should Optus make a bid for iiNet?

   |   View results
Yes
  44%
 
No
  56%
TOTAL VOTES: 665

Vote