Re:Microsoft Bing not only shows child pornography, it sugge...
by AaronFriel on Thursday January 10, 2019 @04:13PM
(#18878239)
They don't just filter their e-mail platforms and consume hash lists from law enforcement agencies. On the contrary,
Microsoft funds and freely distributes the most common tool for checking photos (not file hash based, I think proprietary). That's likely the project the employees you mentioned were on, a job I wouldn't wish on anyone I know. I hope they were well supported both while working and afterward.
Re:Microsoft Bing not only shows child pornography, it sugge...
by vermilingua on Thursday January 10, 2019 @05:56PM
(#18879251)
It states immediately below the fold that it uses hash lists.
Re:Microsoft Bing not only shows child pornography, it sugge...
by AaronFriel on Thursday January 10, 2019 @08:00PM
(#18880104)
I want to avoid using the term - even though they use it - because it's not a hash function like most people are familiar from computer science. Their "hash" function is resistant to alterations and is more like a "fingerprint".
Edit: to be completely clear, PhotoDNA isn't a cryptographic hash. It's a hash function that maximizes similarity of hashes based on inputs, and is probably closer to a bloom filter in some respects.
Re:Microsoft Bing not only shows child pornography, it sugge...
by throwaway218649 on Thursday January 10, 2019 @09:28PM
(#18880545)
These algorithms are called "fuzzy hashing." Examples include "ssdeep," "smapsum," and "nilsimsa."
Re:Microsoft Bing not only shows child pornography, it sugge...
by solarkraft on Friday January 11, 2019 @03:55AM
(#18881902)
Is this what I know as 'image hash'?
Re:Microsoft Bing not only shows child pornography, it sugge...
by decebalus1 on Thursday January 10, 2019 @10:04PM
(#18880694)
> I knew a lawyer who had to defend someone in this type of case. He was allowed to view the evidence (he chose not to), but only him. No paralegals, no one else in his office that wasn't directly sitting on the defense table.
> If you're not granted specific authorization, even looking at this content is illegal, so Microsoft, Facebook, Apple, Google, etc have a very limited staff of people who are even authorized to handle this stuff.
With the risk of offending folks, this is such a retarded law/process. Holy fuck. This is dystopian-level letter of the law vs spirit of the law.
Re:Microsoft Bing not only shows child pornography, it sugge...
by kwhitefoot on Friday January 11, 2019 @06:55AM
(#18882845)
Can you suggest an alternative?
Re:Microsoft Bing not only shows child pornography, it sugge...
by gdhbcc on Friday January 11, 2019 @07:49AM
(#18883168)
Not make information illegal to possess?
We don't make footage of car hackings illegal to own, why should this be any different?
At the end of the day, the harm is already done, no point causing more.
People in companies that track this stuff down get special hash lists from certain law enforcement agencies and the evidence itself is pretty much a controlled substance; so they need special authorization to safely handle and report it with a chain of custody. Two Microsoft employees got PTSD because of the large amount of data they had to check:
https://www.telegraph.co.uk/news/2017/01/12/two-former-micro...
I knew a lawyer who had to defend someone in this type of case. He was allowed to view the evidence (he chose not to), but only him. No paralegals, no one else in his office that wasn't directly sitting on the defense table.
If you're not granted specific authorization, even looking at this content is illegal, so Microsoft, Facebook, Apple, Google, etc have a very limited staff of people who are even authorized to handle this stuff.
It's a difficult problem.