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Home Alerts

SnailLoad Tracks User Activity Covertly

June 25, 2024
Reading Time: 2 mins read
in Alerts
SnailLoad Tracks User Activity Covertly

Researchers from Graz University of Technology have unveiled a sophisticated side-channel attack named SnailLoad, capable of deducing which websites and YouTube videos a user is viewing without direct network access. Unlike traditional methods that require man-in-the-middle positions or Wi-Fi hacking, SnailLoad operates by measuring latency variations from server-side interactions, such as downloading files or fetching content like style sheets or images. This technique exploits differences in internet speeds between servers and local networks, enabling attackers to create unique latency fingerprints for targeted online activities.

SnailLoad’s effectiveness lies in its ability to monitor and match latency traces from content fetched by a victim’s system with pre-created fingerprints of potential websites and videos. The attack capitalizes on inherent internet bandwidth bottlenecks to achieve this, making it difficult to detect or mitigate without significant changes to internet infrastructure. Despite its potential for accurately tracking user interactions, the attack’s impact depends on the victim’s online behavior and the speed of their internet connection.

Presenting their findings at Black Hat USA 2024, researchers Stefan Gast and Daniel Gruss emphasize that SnailLoad represents a significant advancement in covert surveillance techniques. They acknowledge the challenge of mitigating such attacks, given their exploitation of fundamental internet protocols and server-client interaction dynamics. While SnailLoad’s current impact is constrained by the need for a curated list of target websites and videos, its development underscores ongoing challenges in defending against sophisticated cyber threats in an interconnected digital landscape.

Reference:

  • New SnailLoad Attack Tracks User Activity Without Direct Network Access
Tags: Black HatCyber AlertsCyber Alerts 2024Cyber RiskCyber threatGraz UniversityJune 2024researchersSnailLoadTechnologyUSAWi-FiYouTube
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