Don't be captured by CAPTCHAs! Private Access Tokens are a powerful alternative that help you identify HTTP requests from legitimate devices and people without compromising their identity or personal information. We'll show you how your app and server can take advantage of this tool to add confidence to your online transactions and preserve privacy.

To introduce Private Access Tokens, I'll start by explaining why CAPTCHAs are used in the first place. Chances are, if you've signed up for a new account on a website, or tried to sign in with an existing account, you've encountered CAPTCHAs like these at some point. Sometimes, a CAPTCHA is just a button to press, but others can be a challenge to fill out.


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CAPTCHAs can also pose a privacy risk. In order to determine if a client is trusted and can get an easier CAPTCHA, servers often rely on tracking or fingerprinting clients by using their IP address. This kind of tracking is at odds with the direction of internet privacy being taken by Safari, Mail Privacy Protection, and iCloud Private Relay.

And CAPTCHAs can pose a serious problem for accessibility. By trying to prevent access from bots, they also block out real humans who have disabilities or language barriers. There is a better way. Even if someone is interacting with your website for the first time, if they are loading it through an app or browser like Safari, they've already performed many actions that are hard for a bot to imitate. First, they have an iPhone, iPad, or Mac, and they've unlocked the device with their password, Touch ID, or Face ID. They're almost always signed in to the device with their Apple ID. And they've launched a code-signed app.

This information can help your servers trust legitimate clients and prevent fraud, without relying on CAPTCHAs, and without compromising privacy by tracking clients. Private Access Tokens are what allow your servers to automatically trust clients, new in iOS 16 and macOS Ventura. Before explaining how these tokens work, I'm going to show them in action. You're going to love this. I want to read an article on the Financial Times website. I'm very excited about these cinnamon buns. And I've loaded the site on two different phones: one running iOS 15 and one running iOS 16, which supports Private Access Tokens. Starting with the iOS 15 phone, I click Sign In, and fill out my account and password. But then, I get hit with a CAPTCHA. I need to type in the letters before being able to read that article.

When I do the exact same thing on the iOS 16 phone that supports Private Access Tokens, I get right through. This is going to save a lot of people, a lot of time, and your customers will appreciate being trusted. Private Access Tokens let servers avoid CAPTCHAs, like you just saw, by using technology being standardized in the IETF Privacy Pass working group. Apple is working with companies across the industry to make this possible.

First, when the iOS or macOS client accesses a server over HTTP, the server sends back a challenge using the PrivateToken authentication scheme. This specifies a token issuer that is trusted by the server.

The token issuer you select is a trusted provider that can sign tokens that your server validates. This may be your existing CAPTCHA provider, your web hosting service, or your content delivery network, also called a CDN. In the iOS 16 and macOS Ventura betas, there are two token issuers that you can already start testing with. Fastly and Cloudflare are two CDNs that have been developing the Privacy Pass standards, and have already made their issuer services available. Other CAPTCHA providers, web hosting services, and CDNs will also be able to run token issuers that will work with Apple devices. Issuers will be able to sign up later this year at register.apple.com.

When a client accesses your server, you can request tokens by sending an HTTP authentication challenge with the PrivateToken scheme. To do this, you have two options: Either you can work with your existing CAPTCHA or fraud prevention provider to build the challenge into their scripts, so it is handled automatically for you, or you can choose to send these challenges directly from your server.

Your site still needs to work with legacy clients that won't respond to this authentication challenge. So it's important that the authentication should not block your main page load, but instead be treated as an optional way to trust a client. Web servers that are accessed through Safari and WebKit will work automatically, but you can also use Private Access Tokens within your app directly. Private Access Tokens require iOS 16 or macOS Ventura on a device that has an Apple ID signed in. This Apple ID is only used for attestation, and is not shared with the servers that receive tokens. Within your app, tokens are available if you use WebKit or URLSession to contact your servers using HTTP. Then anytime your app receives a challenge while it's in the foreground, the system will automatically send a token as authentication.

We offer a variety of ways to control who can access your videos and how they can do so. This article explains how to change a video's privacy settings and control where it can be embedded. To learn more, see Overview of video privacy settings.

Young Voices on Diversity in Cyber

Join host Emily Wearmouth for an insightful discussion with three bright young professionals in cybersecurity: Ally Frame, Jacklyne Mbuthia, and Sam Van Stokrom.

HarbourVest is an independent, global private markets firm with over 40 years of experience and more than $112+ billion assets under management as of June 30, 2023. Our interwoven platform provides clients access to global primary funds, secondary transactions, direct co-investments, real assets and infrastructure, and private credit.

Our mission is protecting consumers and competition by preventing anticompetitive, deceptive, and unfair business practices through law enforcement, advocacy, and education without unduly burdening legitimate business activity.

Under a proposed order, which must be approved by a federal court before it can go into effect, Ring will be required to delete data products such as data, models, and algorithms derived from videos it unlawfully reviewed. It also will be required to implement a privacy and security program with novel safeguards on human review of videos as well as other stringent security controls, such as multi-factor authentication for both employee and customer accounts.

We are looking to get a list of all the videos, including private videos, that are owned by users that have been deleted. That way we can access them and reassign them to an active user in the company, or at least provide a link to them. I've found the settings to export specific user data to HTML in the Admin settings, but it only allows you to search through users who are still active in the organization, and does not include the users who have been deleted.

Before this latest admission, Ring has faced other controversies about the way it facilitates police access to user footage. Ring had enabled police to send bulk requests directly to many device owners over a large area. Police did so at a staggering level: in 2020, for example, police requested videos over 20,000 times. In 2021, however, Ring caved to activist pressure and changed how police send requests, requiring them to publicly post them to the Neighbors app, which shed important light on these requests. 


We thank Senator Markey for raising these issues. For too long, Amazon has not taken seriously the many civil liberties concerns with its Ring products. We hope the strong response to these latest admissions will help push Amazon to make privacy overhauls. The company must consider the danger these products pose to the public by creating a growing web of surveillance systems that are owned by individuals, but are de-facto operated by law enforcement.

U.S. Senator Ed Markey of Massachusetts has sent a much-needed letter to car manufacturers asking them to clarify a surprisingly hard question to answer: what data cars collect? Who has the ability to access that data? Private companies can often be a black box of secrecy that obscure basic...

When storing images, videos or other files in Cloudinary, both the originals and their transformed versions are publicly available through a CDN, by default. You can use randomly generated Public IDs for your assets, which makes it harder for end users to guess your media URLs, but you may want more formal ways to control who can access your media files and when.

Cloudinary's transformation URLs are dynamic, which means that if the requested transformed asset does not already exist, then it is created on the fly. This is a powerful feature, but you may not want your end users to play with these options on your assets. To control this, you can enable Strict Transformations in your product environment to prevent transformations from being dynamically applied to media assets. Except for any transformations that you specifically allow to be used dynamically, your users will be restricted to accessing only pre-generated transformed assets (generated eagerly during upload or with an authenticated request to our API). To allow the asset to be delivered, the file extension and the transformation part of the URL used to request an asset must be identical to one of the pre-generated transformations.

You cannot use f_auto directly within a named transformation, so you will need to combine f_auto and your named transformation in a dynamic transformation, and then allow that as a strict transformation.

A signed Cloudinary delivery URL is a dynamic URL that has its signature validated before making it available for view (see the article about on-the-fly image transformations secured with signed urls for more details). Signed delivery URLs are generally used to:

A signed delivery URL contains a signature component of the format /s--SIGNATURE--/. The signature is automatically generated by Cloudinary's backend SDKs by adding the sign_url boolean parameter to the helper method and setting it to true (you can manually generate a signature by taking the first 8 characters of a base64 encoding of an SHA digest of a 'public_id/transformation' string concatenated with your API secret. See Generating delivery URL signatures for more information). e24fc04721

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