This Week In Security: Apple Warns Users, Stripe Merchants Leak Keys, Copilot Helps Hack Itself, And Comcast Senses Movement

Apple has started sending some users push notifications warning that they have been targeted with specific malware. No specific information about the threat Apple detected is available. While multiple iOS attacks were released in spring of 2026, they all target much older versions of iOS and older hardware versions.

Users in 110 countries have received notifications recently, warning them they may have been targeted or already impacted by malware such. Apple typically uses the crash reporting mechanism for system apps to track new attack trends. The majority of users will likely never see an alert from Apple because malware with state-level capabilities like the Pegasus family is extremely expensive to develop. However, commercial availability means that some governments have deployed them against political opponents, protesters, human rights lawyers, and journalists.

If Apple pushes a security alert, it will show up as an email and a standard system notification, but also as a notification inside the Settings application. While email and notifications can be spoofed as part of phishing attempts, to date there is nothing which can generate false alerts inside Settings.

Almost universally in these cases, Apple recommends enabling “Lockdown Mode“, which adds extra protection to devices at the cost of decreased battery life and slower performance. Lockdown mode disables custom fonts on web pages, accelerated JavaScript, restricts message attachments over SMS and iMessage, and disables other common paths used by malware to steal data. Android devices offer a similar feature since Android 15 that is less comprehensive but can still provide additional safeguards for users directly at risk.

Attacking Airplane Networks

With research that will surely result in some breathless reports, researchers presented at Usenix 2026 an attack against the communications bus of a Boeing 737.

The ARINC 429 bus is a communications architecture for planes, similar to the CAN bus used in cars. Once you are connected to that bus, it can be vulnerable in the same ways cars can be vulnerable to data manipulation. In the Usenix paper, researchers discovered that one access port to the airplane communications system is easily reached from the outside of the plane, though “easily” in this context means “by airplane maintenance technicians”. The paper represents over a decade of work by the team in obtaining and building a test lab of avionics equipment to represent an actual airplane, culminating in an embedded device described as “the size of a quarter” that plugs into the communications port and provides remote access over WiFi.

It needs to be emphasized, given other recent news, that this is a piece of hardware being added to the plane which communicates over WiFi, and not a way to attack an unmodified plane via passenger WiFi!

Once part of the ARINC bus, it seems access is basically unfettered: the team describes being able to reprogram the autopilot, feed the pilot displays false data, and being able to modify the temperature and weight data shown, which could lead to miscalculations in take-off speeds with obviously catastrophic results. Fortunately, the researchers have also been working with Boeing since 2020 to address the issues being found, and the practicality of the attack in the wild remains largely theoretical. The research team has recommended removing the external ports in future aircraft, and blocking access to them physically, like with epoxy, in the current designs.

If reading security research papers is your kind of fun, be sure to check out the rest of the papers that were part of Usenix 2026.

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Hackaday Links: August 16, 2026

We’re no strangers to unusual hardware failures around these parts, but even so, a swarm of jellyfish clogging up the works is a new one to us. That’s exactly what happened to the cooling system at the Gravelines nuclear power plant in France earlier this week, resulting in three reactors having to be shut down. This isn’t even an isolated incident, as POLITICO points out that the same thing actually happened last year around this same time.

So why are jellyfish staging an annual protest against nuclear power? A warming of the North Sea has extended breeding seasons and produced larger populations of the plankton that the jellyfish feed on. This is great for the gelatinous sea creatures, but not exactly ideal if you’re trying to pump the water they live in through a complex cooling system. The French installed filter screens and monitoring systems after this happened in 2025, but clearly they’re going to need to keep working on the problem.

From a new problem to a very old one, a BBC investigation has revealed that the UK’s National Health Service (NHS) Blood and Transplant department was inadvertently leaking private patient data by sending it in the clear over the pager network. Sniffing pager messages was fairly trivial decades ago, and is even easier these days thanks to the proliferation of cheap software-defined radios and open source decoding software. Given the fragility of the underlying communication network they use, the NHS announced they were going to stop using pagers by 2021, but clearly not everyone got the memo.

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MQTT Pager Build Is Bringing Beepers Back

Pagers were once a great way to get a message to someone out in public; they just had to be cool enough to have one. These days, they’re mostly the preserve of doctors and a few other niche operators. [Kyle Tryon] is bringing the beeper back, though, with a custom ESP32-based build.

The ESP32 is a great microcontroller for this kind of project, because it’s got WiFi and Bluetooth connectivity built right in. This let [Kyle] write some straightforward code so that it could receive alerts via MQTT. In particular, it’s set up to go off whenever there’s an app or service notification fired off by the Sentry platform. For [Kyle]’s line of work, it’s effectively an on-call beeper that calls them in when a system needs immediate attention. When it goes off, it plays the ringtone of your choice—with [Kyle] making it capable of playing tunes in Nokia’s old-school RTTTL music format.

The code was simple enough, and the assembly wasn’t much harder. By starting with an Adafruit ESP32 Reverse TFT Feather, the screen and buttons were all ready to go right out of the box. [Kyle] merely had to print up a rad translucent case on a resin printer to make it look like a sweet fashionable beeper from the 90s.

It’s a fun little project that should prove useful, while also being nicely reminiscent of a technology that has largely fallen by the wayside. Continue reading “MQTT Pager Build Is Bringing Beepers Back”

Hands On: The Hacker Pager

It should come as no surprise that the hacker community has embraced the Meshtastic project. It’s got a little bit of everything we hold dear: high quality open source software, fantastic documentation, a roll-your-own hardware ethos, and just a dash of counterculture. An off-grid communications network cobbled together from cheap parts, some of which being strategically hidden within the urban sprawl by rogue operators, certainly sounds like the sort of thing you’d read about it in a William Gibson novel.

But while the DIY nature of Meshtastic is one of its most endearing features for folks like us, it can also be seen as one of its weak spots. Right now, the guidance for those looking to get started is to pick a compatible microcontroller development board, 3D print a case for it, screw on an antenna from AliExpress, flash your creation with the latest firmware, and then spend some quality time with the documentation and configuration tools to actually get it on the air. No great challenge for the average Hackaday reader, but a big ask for the weekend adventurer that’s just looking for a way to keep in touch with their friends while camping.

Quality hardware that offers a turn-key experience will be critical to elevating Meshtastic from a hobbyist’s pastime to something that could actually be fielded for applications such as search and rescue. Plus, let’s be honest, even those of us who like to put together our own gadgets can appreciate a more consumer-oriented piece of hardware from time to time. Especially if that hardware happens to be open source and designed to empower the user rather than hold them back.

Enter the Hacker Pager from exploitee.rs. As the name implies, it’s still very much a device intended for hackers — a piece of hardware designed for the halls of DEF CON rather than trekking through the wilderness. But it’s also an important step towards a new generation of Meshtastic hardware that meets the high standard of quality set by the software itself.

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Arduino Turned Into Something Kinda Like A Pager

Video may have killed the radio star, but cell phones and smart phones all but killed the pager. They still exist, of course, but only in very niche applications. [João Santos] wanted a pager-like experience for himself, though, so he enlisted an Arduino and got to work. Watch a video of the system working below.

The build uses an Arduino Uno to drive a simple HD44780 LCD display with 16 characters each across two lines of text. It’s hooked up to a Wemos D1, which uses its WiFi connection to get online. To this end, it’s capable of talking to a web application which allows users to enter text messages. It receives these messages, passes them to the Arduino Uno over I2C, and then the Uno shuttles the message to the display. It’s overkill, but [João] just found it quicker to get everything up and running via this route.

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Pager Lives Again Thanks To Python And Mastodon

Pagers were a big deal for a while there, even if they never quite made it into the pantheon of excellent sitcom plot devices like answering machines did. Anyway, [Finnley Dolfin] had some pagers and gave them a refresh for the modern era, using them to receive message alerts from Mastodon.

The project is laced together with a bunch of Python code. It uses the Mastodon library for interacting with the social media website. When it detects an incoming direct message, it hooks into DAPNET – the Decentralized Amateur Paging Network.  Via this network, a message is sent out over the airwaves to [Finnley’s] pager, serving as a notification that someone’s reached out to chat on Mastodon.

It’s neat that the amateur radio world is keeping pagers alive, using distributed base stations to share messages. Unfortunately, given the existence of smartphones, we don’t quite see pagers catching on again any time soon. And yet, [Finnley’s] setup has a certain level of old-school cool that no modern phone could match.

We’ve seen only a handful of pager hacks over the years, but they’re still pretty neat. If you’ve got your own cooking up in the workshop, drop us a line, yeah?

Send Old-Fashioned Pager Messages With New-Fashioned Hardware

In a world of always-connected devices and 24/7 access to email and various social media and messaging platforms, it’s sometimes a good idea to take a step away from the hustle and bustle for peace of mind. But not too big of a step. After all, we sometimes need some limited contact with other humans, so that’s what [EverestX] set out to do with his modern, pocket-sized communication device based on pager technology from days of yore.

The device uses the POCSAG communications protocol, a current standard for pager communications that allows for an SMS-like experience for those still who still need (or want) to use pagers. [EverestX] was able to adapt some preexisting code and port it to an Atmel 32u4 microcontroller. With a custom PCB, small battery, an antenna, and some incredibly refined soldering skills, he was able to put together this build with an incredibly small footprint, slightly larger than a bottle cap.

Once added to a custom case, [EverestX] has an excellent platform for sending pager messages to all of his friends and can avoid any dreaded voice conversations. Pager hacks have been a favorite around these parts for years, and are still a viable option for modern communications needs despite also being a nostalgic relic of decades past. As an added bonus, the 32u4 microcontroller has some interesting non-pager features that you might want to check out as well.

Thanks to [ch0l0man] for the tip!