Quantum Computers Less Secure Than Thought: New Hacking Method Uncovered
Researchers have exposed a startling vulnerability in quantum computers by adapting the Rowhammer attack, a technique well-known in classical computing. In traditional systems, Rowhammer disrupts DRAM memory by repeatedly accessing adjacent cells, causing unintended changes. Scientists at the University of Gdańsk have now demonstrated a similar effect in quantum systems: repeated manipulations of qubits create crosstalk, altering the state of neighboring qubits without direct access. Meanwhile, a team from Northwestern University developed a method called QubitHammer, which uses microwave pulses to achieve comparable attacks.
Tests on IBM’s quantum computers confirmed the vulnerability, though IBM has since restricted access to the pulses in question. Other cloud-based quantum platforms, however, may still be at risk. As quantum technology advances and systems become more shared, such attacks could pose a significant threat, warns Dominik Hanglötter from the University of California, Berkeley.
The early stage of quantum computing offers a window to develop defenses. Researcher Schaefer emphasizes that studying these attacks now can pave the way for robust safeguards in future devices. Yet, Akshata Shenoy from the University of Gdańsk cautions that protective measures, much like those devised for Rowhammer in classical systems, might inadvertently create new vulnerabilities if their side effects are overlooked.
