🔬 Security Research • Side-Channel Attack

Mic-E-Mouse Attack: The Shocking New Method Hackers Use to Steal Data by Exploiting Your Mouse Sensor

By CyberDudeBivash • October 07, 2025 • Threat Analysis Report

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Disclosure: This is an analysis of an emerging, conceptual security threat for researchers and security professionals. It contains affiliate links to relevant security solutions. Your support helps fund our independent research.

Threat Analysis: Table of Contents

Chapter 1: The Sounds of Silence — The New Frontier of Side-Channel Attacks

Every electronic device you own is constantly emitting a chorus of invisible signals—faint electromagnetic waves, subtle power fluctuations, and inaudible, high-frequency sounds. For a sophisticated adversary, these signals are not just noise; they are a source of intelligence. This is the world of **side-channel attacks**. Researchers have demonstrated that by analyzing these emanations, it’s possible to steal cryptographic keys and other sensitive data. A new, conceptual attack vector, which we are calling **”Mic-E-Mouse,”** explores a shocking new possibility: what if the faint sounds from your everyday computer mouse could be used to see what’s on your screen?

Chapter 2: Threat Analysis — The Physics of the ‘Mic-E-Mouse’ Attack

The attack is based on the principle of **acoustic cryptanalysis**. The theory is that the high-frequency electronic noise (often called “coil whine”) emitted by a mouse’s optical sensor and processing chip changes based on the data it is processing.

The Data Leak:

The mouse’s sensor emits a faint, high-frequency noise during operation.
The characteristics of this noise—its frequency and amplitude—fluctuate based on the visual complexity of the surface the sensor is seeing at any given moment.
This means the sound pattern generated when the mouse moves over a block of black text is measurably different from the pattern generated when it moves over a solid-colored image.
A highly sensitive microphone, combined with a powerful Machine Learning (ML) model, could be trained to correlate these subtle acoustic variations with the pixels on the screen, potentially allowing an attacker to reconstruct the information being viewed.

Chapter 3: The Kill Chain — A Two-Device Espionage Scenario

This is not a remote attack that can be carried out over the internet. It requires a listening device to be in close physical proximity to the target computer.

**The Initial Compromise:** The attacker must first compromise a device with a microphone near the target. The most likely vector is the target’s own smartphone, a smart speaker in the room, or a colleague’s laptop, infected with a piece of **mobile spyware**. This becomes the “listening post.”
**Acoustic Recording:** The malware on the listening post activates the microphone and is programmed to filter for the specific high-frequency signature of a mouse sensor.
**Data Exfiltration & Analysis:** The captured acoustic data is compressed and exfiltrated to the attacker’s server. A powerful offline ML model then analyzes the patterns to reconstruct sensitive information that the user was viewing, such as a password being typed into an on-screen keyboard or the text of a confidential document.

Chapter 4: The Defender’s Playbook — Mitigating an Acoustic Threat

While exotic, this class of attack, similar to hardware exploits like **Battering RAM**, is on the cutting edge of espionage. Defense must be strategic.

1. Prevent the Initial Compromise

The entire attack hinges on the attacker’s ability to compromise a “listening post.” This is the weakest link. Your most effective defense is to protect your mobile devices and workstations with a powerful, modern security solution that can detect and block the spyware or malware that enables the attack.

Protect Your Endpoints: Your first and last line of defense against the malware that enables these attacks is a powerful security suite. **Kaspersky’s solutions for mobile and desktop** can detect the spyware that acts as the listening post.

2. Physical Security & Awareness

For high-security environments, physical awareness is key. This research highlights the danger of “smart” devices in sensitive meeting rooms and the security risk of open-plan offices where a colleague’s compromised device could be used to target you. In some cases, acoustic jamming or white noise generators may be a viable defense.

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About the Author

CyberDudeBivash is a cybersecurity strategist with 15+ years in low-level security research, hardware exploitation, and counter-espionage, advising government and enterprise clients across APAC. [Last Updated: October 07, 2025]

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