Author: Spicy Corp
The Baseband: The Second Computer in Your Phone
Your phone isn’t one computer. It’s at least two. Alongside the main processor that runs your apps sits a second, largely hidden one called the baseband, the chip that handles all cellular communication. Most people have never heard of it, and that’s part of the problem, because the baseband is one of the least transparent
The 5G Security Paradox
5G was marketed as a security upgrade, and in some real ways it is. It also quietly expanded the attack surface of the mobile network more than any generation before it. Both things are true at once, which is the paradox: the most secure-on-paper cellular standard yet is also the one with the most ways
The Emergency-Services Access Every Phone Has
There are access paths built into every phone that you can’t simply switch off, because they exist by law and by design. Two of them are worth understanding clearly, not because they’re sinister, but because pretending they aren’t there leads to bad assumptions about how private a phone can be. They are emergency-services location and
Ultrasonic Tracking: The Vector Nobody Mentions
Most tracking you can at least reason about: radios that broadcast, identifiers that get logged. Ultrasonic tracking is stranger, because it uses sound your ears can’t hear to link your devices and follow your behavior across the physical and digital worlds. It’s the kind of thing that sounds like paranoia until you understand the mechanism,
The Bluetooth Mesh That Tracks You Across Town
Leave Bluetooth on, which almost everyone does, and your phone is a steady participant in a quiet, sprawling tracking network it never asked to join. Individually, a Bluetooth signal is short-range and harmless. Stitched together across thousands of listening points, it becomes a way to follow a device through a building, a neighborhood, and increasingly
What Forensic Extraction Tools Can and Can’t Do
Forensic extraction tools are the devices that law enforcement, border agents, and others use to pull data off a seized phone. They have a fearsome reputation, some of it earned and some of it marketing. Understanding what they actually can and cannot do, and what determines which, is far more useful than either panicking about
Memory Safety: Why Most Phone Exploits Start Here
Most successful attacks on a phone, the serious ones that take control of the device, share a common root: a category of bug called a memory-safety flaw. It’s the single most important class of vulnerability in modern software, and understanding why it matters explains a lot about what actually makes one phone harder to hack
TrustZone, Secure Enclaves, and Why a Separate Chip Matters
Modern phones all claim to protect your most sensitive secrets, your encryption keys, your biometric data, in a special secure area. But not all secure areas are built the same way, and the architectural difference between them matters more than the marketing suggests. The key question is whether that protected zone is a partition of
Hardening the Home-Office Comms Hub
Remote work moved a large part of corporate communications into people’s homes, and the home was never designed to be a secure office. The same network that runs a child’s game console and a smart speaker now carries sensitive work, and attackers know it. If you work from home, your home network and devices are
The Firmware Update Dilemma
There’s a real tension in keeping devices updated, and pretending it doesn’t exist helps no one. Updates fix security holes, which means applying them protects you. Updates also occasionally break things, which means applying them carries a risk of its own. For an individual that risk is usually trivial, but for an organization running many
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