Subscriber Identity Modules (SIMs), secure elements used to connect devices to a mobile network, can pose severe security risks when compromised. A malicious SIM could allow attackers to gather information about a device, interfere with its connectivity and serve as an entry point for further cyberattacks.

Presenting their findings at the 2026 USENIX WOOT Conference on Offensive Technologies in Baltimore, University of Birmingham researchers reveal a new attack surface exposed to malicious and compromised SIMs.

A feature known as Proactive SIM allows a SIM card to send a limited number of special commands directly to a device’s modem...

What shape is an asteroid? For (44) Nysa, the honest answer until now has been that nobody knew. It is one of the brightest and largest E-type asteroids in the main belt, a class with a surface rich in enstatite, and its oddness has made it a favorite target for well over a hundred years. Successive observations hinted that it was elongated, perhaps even two lumps stuck together, but the picture stayed frustratingly blurred.

An international team led by Kate Minker at Lowell Observatory has now brought two of the world’s heaviest instru...

One of the crucial steps in cancer proliferation is evading killer immune cells. Cancer cells use a variety of signaling molecules to evade the immune system. Immune checkpoint inhibitor (ICI) therapy interferes with some of these evasion tactics, improving the immune system’s ability to suppress tumors. However, the success of ICI therapy depends on the specific signals being secreted by the tumor.

Recent research has identified D-amino acids (...