Full Video of Apple Engineer's Black Hat Security Talk Now Available

Earlier this month, Apple's head of security engineering Ivan Krstic gave a talk at the Black Hat Conference, an annual event designed for the global InfoSec community. During the event, Krstic spoke about Apple security and unveiled the company's new bug bounty program.

Krstic's briefing is now available in full on YouTube, shared this morning on the Black Hat YouTube channel in a video entitled "Behind the Scenes of iOS Security."


In the talk, Krstic covers three major iOS security mechanisms -- HomeKit, Auto Unlock, and iCloud Keychain -- in "unprecedented technical detail," along with other iOS security measures.

HomeKit, Auto Unlock and iCloud Keychain are three Apple technologies that handle exceptionally sensitive user data - controlling devices (including locks) in the user's home, the ability to unlock a user's Mac from an Apple Watch, and the user's passwords and credit card information, respectively. We will discuss the cryptographic design and implementation of our novel secure synchronization fabric which moves confidential data between devices without exposing it to Apple, while affording the user the ability to recover data in case of device loss.

Data Protection is the cryptographic system protecting user data on all iOS devices. We will discuss the Secure Enclave Processor present in iPhone 5S and later devices and explain how it enabled a new approach to Data Protection key derivation and brute force rate limiting within a small TCB, making no intermediate or derived keys available to the normal Application Processor.

Traditional browser-based vulnerabilities are becoming harder to exploit due to increasingly sophisticated mitigation techniques. We will discuss a unique JIT hardening mechanism in iOS 10 that makes the iOS Safari JIT a more difficult target.

The most notable moment of Krstic's briefing features the unveiling of Apple's first ever bug bounty program, which will see the company paying out up to $200,000 to researchers who discover vulnerabilities in Apple software. Apple's bug bounty program, initially limited to a few dozen researchers, launches this September.

Popular Stories

iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
Google maps feaure

Google Maps Quietly Added This Long-Overdue Feature for Drivers

Wednesday December 10, 2025 2:52 am PST by
Google Maps on iOS quietly gained a new feature recently that automatically recognizes where you've parked your vehicle and saves the location for you. Announced on LinkedIn by Rio Akasaka, Google Maps' senior product manager, the new feature auto-detects your parked location even if you don't use the parking pin function, saves it for up to 48 hours, and then automatically removes it once...
Foldable iPhone 2023 Feature 1

Apple to Make More Foldable iPhones Than Expected [Updated]

Tuesday December 9, 2025 9:59 am PST by
Apple has ordered 22 million OLED panels from Samsung Display for the first foldable iPhone, signaling a significantly larger production target than the display industry had previously anticipated, ET News reports. In the now-seemingly deleted report, ET News claimed that Samsung plans to mass-produce 11 million inward-folding OLED displays for Apple next year, as well as 11 million...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods Pro 3

Thursday December 11, 2025 11:28 am PST by
Apple today released new firmware designed for the AirPods Pro 3 and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B30, up from 8B25, while the AirPods Pro 2 firmware is 8B28, up from 8B21. There's no word on what's include in the updated firmware, but the AirPods Pro 2 and AirPods Pro 3 are getting expanded support for Live Translation in the European Union in iOS...
iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
AirTag 2 Mock Feature

Apple AirTag 2: Four New Features Found in iOS 26 Code

Thursday December 11, 2025 10:31 am PST by
The AirTag 2 will include a handful of new features that will improve tracking capabilities, according to a new report from Macworld. The site says that it was able to access an internal build of iOS 26, which includes references to multiple unreleased products. Here's what's supposedly coming: An improved pairing process, though no details were provided. AirTag pairing is already...
iOS 26

Apple Seeds Second iOS 26.2 Release Candidate to Developers and Public Beta Testers

Monday December 8, 2025 10:18 am PST by
Apple today seeded the second release candidate version of iOS 26.2 to developers and public beta testers, with the software coming one week after Apple seeded the first RC. The release candidate represents the final version iOS 26.2 that will be provided to the public if no further bugs are found. Registered developers and public beta testers can download the betas from the Settings app on...
iPhone 14 Pro Dynamic Island

iPhone 18 Pro Leak Adds New Evidence for Under-Display Face ID

Monday December 8, 2025 4:54 am PST by
Apple is actively testing under-screen Face ID for next year's iPhone 18 Pro models using a special "spliced micro-transparent glass" window built into the display, claims a Chinese leaker. According to "Smart Pikachu," a Weibo account that has previously shared accurate supply-chain details on Chinese Android hardware, Apple is testing the special glass as a way to let the TrueDepth...
ipad blue prime day

iPad 12 Rumored to Get iPhone 17's A19 Chip, Breaking Apple Tradition

Wednesday December 10, 2025 12:22 pm PST by
The next-generation low-cost iPad will use Apple's A19 chip, according to a report from Macworld. Macworld claims to have seen an "internal Apple code document" with information about the 2026 iPad lineup. Prior documentation discovered by MacRumors suggested that the iPad 12 would be equipped with an A18 chip, not an A19 chip. The A19 chip was just released this year in the iPhone 17, and...
studio display purple

Apple Studio Display 2 Code Hints at 120Hz ProMotion, HDR, A19 Chip

Thursday December 11, 2025 4:19 am PST by
Apple's next-generation Studio Display is expected to arrive early next year, and a new report allegedly provides a couple more details on the external monitor's capabilities. According to internal Apple code seen by Macworld, the new external display will feature a variable refresh rate capable of up to 120Hz – aka ProMotion – as well as support for HDR content. The current Studio...

Top Rated Comments

iTom17 Avatar
122 months ago
I don't understand most of it either, but it's pretty fun to see how serious Apple is about system security.

I'm currently doing network administration, where network security is one of the topics we learn about. May not be on a big scale, but I actually like this whole subject. And I'm planning on doing something with security engineering after this.

So I may not understand 99% of this, it's just fun to watch. :p


By the way, here are the presentation slide: https://www.blackhat.com/docs/us-16/materials/us-16-Krstic.pdf
Score: 6 Votes (Like | Disagree)
akfgpuppet Avatar
122 months ago
....and I understood like 5% of what he was talking about.
Score: 5 Votes (Like | Disagree)
69Mustang Avatar
122 months ago
Sure, compared to whom?

And who takes security+privacy as seriously?

Who has an executive team that can axe marketable features for privacy reasons, that not even 1% of people gives a damn?
Calm down dude. It was just a sarcastic joke in response to another quote.
Score: 5 Votes (Like | Disagree)
pat500000 Avatar
122 months ago
The only thing I understood is "Thanks for coming" part.
Score: 4 Votes (Like | Disagree)
yaxomoxay Avatar
122 months ago
but ios requires 6 numbers by default.
That's the trick that Cue designed. Everyone's is going for the six digits!
Score: 4 Votes (Like | Disagree)
CarlJ Avatar
122 months ago
Apple's password to unlock everything is 12345. Try it out!
I've got that same combination on my luggage!
[doublepost=1471416518][/doublepost]
RIP Jailbreak.
If the choice is between security that vexes even governments, and wacky add-ons, I'll take the security every day and twice on Sunday.
Score: 4 Votes (Like | Disagree)