Tag Archives: pornography

Facebook Helped Develop a Tails Exploit

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2020/06/facebook_helped.html

This is a weird story:

Hernandez was able to evade capture for so long because he used Tails, a version of Linux designed for users at high risk of surveillance and which routes all inbound and outbound connections through the open-source Tor network to anonymize it. According to Vice, the FBI had tried to hack into Hernandez’s computer but failed, as the approach they used “was not tailored for Tails.” Hernandez then proceeded to mock the FBI in subsequent messages, two Facebook employees told Vice.

Facebook had tasked a dedicated employee to unmasking Hernandez, developed an automated system to flag recently created accounts that messaged minors, and made catching Hernandez a priority for its security teams, according to Vice. They also paid a third party contractor “six figures” to help develop a zero-day exploit in Tails: a bug in its video player that enabled them to retrieve the real I.P. address of a person viewing a clip. Three sources told Vice that an intermediary passed the tool onto the FBI, who then obtained a search warrant to have one of the victims send a modified video file to Hernandez (a tactic the agency has used before).

[…]

Facebook also never notified the Tails team of the flaw — breaking with a long industry tradition of disclosure in which the relevant developers are notified of vulnerabilities in advance of them becoming public so they have a chance at implementing a fix. Sources told Vice that since an upcoming Tails update was slated to strip the vulnerable code, Facebook didn’t bother to do so, though the social media company had no reason to believe Tails developers had ever discovered the bug.

[…]

“The only acceptable outcome to us was Buster Hernandez facing accountability for his abuse of young girls,” a Facebook spokesperson told Vice. “This was a unique case, because he was using such sophisticated methods to hide his identity, that we took the extraordinary steps of working with security experts to help the FBI bring him to justice.”

I agree with that last paragraph. I’m fine with the FBI using vulnerabilities: lawful hacking, it’s called. I’m less okay with Facebook paying for a Tails exploit, giving it to the FBI, and then keeping its existence secret.

Another article.

EDITED TO ADD: This post has been translated into Portuguese.

Reasonably Clever Extortion E-mail Based on Password Theft

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2018/07/reasonably_clev.html

Imagine you’ve gotten your hands on a file of e-mail addresses and passwords. You want to monetize it, but the site it’s for isn’t very valuable. How do you use it? You convince the owners of the password to send you money.

I recently saw a spam e-mail that ties the password to a porn site. The e-mail title contains the password, which is sure to get the recipient’s attention.

I do know, yhhaabor, is your password. You may not know me and you’re most likely thinking why you’re getting this email, right?

actually, I actually setup a malware on the adult video clips (pornographic material) web site and you know what, you visited this web site to have fun (you know what I mean). While you were watching videos, your web browser began operating as a RDP (Remote Desktop) having a key logger which provided me accessibility to your display and web camera. after that, my software obtained your entire contacts from your Messenger, social networks, and email.

What exactly did I do?

I created a double-screen video. First part shows the video you were viewing (you’ve got a fine taste ; )), and 2nd part displays the recording of your webcam.

What should you do?

Well, I believe, $2900 is a reasonable price for our little secret. You will make the payment through Bitcoin (if you don’t know this, search “how to buy bitcoin” in Google).

This is clever. The valid password establishes legitimacy. There’s a decent chance the recipient has visited porn sites, and maybe set up an account for which they can’t remember the password. The RDP attack is plausible, as is turning on the camera and downloading the contacts file.

Of course, it all fails because there isn’t enough detail. If the attacker actually did all of this, they would include the name of the porn site and attached the video file.

But it’s a clever attack, and one I have not seen before. If the attacker asked for an order of magnitude less money, I think they would make more.

EDITED TO ADD: Brian Krebs has written about this, too.

Facebook Fingerprinting Photos to Prevent Revenge Porn

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2017/11/facebook_finger.html

This is a pilot project in Australia:

Individuals who have shared intimate, nude or sexual images with partners and are worried that the partner (or ex-partner) might distribute them without their consent can use Messenger to send the images to be “hashed.” This means that the company converts the image into a unique digital fingerprint that can be used to identify and block any attempts to re-upload that same image.

I’m not sure I like this. It doesn’t prevent revenge porn in general; it only prevents the same photos being uploaded to Facebook in particular. And it requires the person to send Facebook copies of all their intimate photos.

Facebook will store these images for a short period of time before deleting them to ensure it is enforcing the policy correctly, the company said.

At least there’s that.

More articles.

Technology to Out Sex Workers

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2017/10/technology_to_o.html

Two related stories:

PornHub is using machine learning algorithms to identify actors in different videos, so as to better index them. People are worried that it can really identify them, by linking their stage names to their real names.

Facebook somehow managed to link a sex worker’s clients under her fake name to her real profile.

Sometimes people have legitimate reasons for having two identities. That is becoming harder and harder.

Inmates Secretly Build and Network Computers while in Prison

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2017/05/inmates_secretl.html

This is kind of amazing:

Inmates at a medium-security Ohio prison secretly assembled two functioning computers, hid them in the ceiling, and connected them to the Marion Correctional Institution’s network. The hard drives were loaded with pornography, a Windows proxy server, VPN, VOIP and anti-virus software, the Tor browser, password hacking and e-mail spamming tools, and the open source packet analyzer Wireshark.

Another article.

Clearly there’s a lot about prison security, or the lack thereof, that I don’t know. This article reveals some of it.

Analyzing WeChat

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2016/12/analyzing_wecha.html

Citizen Lab has analyzed how censorship works in the Chinese chat app WeChat:

Key Findings:

  • Keyword filtering on WeChat is only enabled for users with accounts registered to mainland China phone numbers, and persists even if these users later link the account to an International number.
  • Keyword censorship is no longer transparent. In the past, users received notification when their message was blocked; now censorship of chat messages happens without any user notice.

  • More keywords are blocked on group chat, where messages can reach a larger audience, than one-to-one chat.

  • Keyword censorship is dynamic. Some keywords that triggered censorship in our original tests were later found to be permissible in later tests. Some newfound censored keywords appear to have been added in response to current news events.

  • WeChat’s internal browser blocks China-based accounts from accessing a range of websites including gambling, Falun Gong, and media that report critically on China. Websites that are blocked for China accounts were fully accessible for International accounts, but there is intermittent blocking of gambling and pornography websites on International accounts.

Lots more details in the paper.

Cybersecurity Issues for the Next Administration

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2016/10/cybersecurity_i.html

On today’s Internet, too much power is concentrated in too few hands. In the early days of the Internet, individuals were empowered. Now governments and corporations hold the balance of power. If we are to leave a better Internet for the next generations, governments need to rebalance Internet power more towards the individual. This means several things.

First, less surveillance. Surveillance has become the business model of the Internet, and an aspect that is appealing to governments worldwide. While computers make it easier to collect data, and networks to aggregate it, governments should do more to ensure that any surveillance is exceptional, transparent, regulated and targeted. It’s a tall order; governments such as that of the US need to overcome their own mass-surveillance desires, and at the same time implement regulations to fetter the ability of Internet companies to do the same.

Second, less censorship. The early days of the Internet were free of censorship, but no more. Many countries censor their Internet for a variety of political and moral reasons, and many large social networking platforms do the same thing for business reasons. Turkey censors anti-government political speech; many countries censor pornography. Facebook has censored both nudity and videos of police brutality. Governments need to commit to the free flow of information, and to make it harder for others to censor.

Third, less propaganda. One of the side-effects of free speech is erroneous speech. This naturally corrects itself when everybody can speak, but an Internet with centralized power is one that invites propaganda. For example, both China and Russia actively use propagandists to influence public opinion on social media. The more governments can do to counter propaganda in all forms, the better we all are.

And fourth, less use control. Governments need to ensure that our Internet systems are open and not closed, that neither totalitarian governments nor large corporations can limit what we do on them. This includes limits on what apps you can run on your smartphone, or what you can do with the digital files you purchase or are collected by the digital devices you own. Controls inhibit innovation: technical, business, and social.

Solutions require both corporate regulation and international cooperation. They require Internet governance to remain in the hands of the global community of engineers, companies, civil society groups, and Internet users. They require governments to be agile in the face of an ever-evolving Internet. And they’ll result in more power and control to the individual and less to powerful institutions. That’s how we built an Internet that enshrined the best of our societies, and that’s how we’ll keep it that way for future generations.

This essay previously appeared on Time.com, in a section about issues for the next president. It was supposed to appear in the print magazine, but was preempted by Donald Trump coverage.