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.

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