On the Security and Privacy of Federated Learning: a Survey with Attacks, Defenses, Frameworks, Applications, and Future Directions

Federated Learning FL is an emerging distributed machine learning paradigm enabling multiple clients to train a global model collaboratively without sharing their raw data. While FL enhances data privacy by design, it remains vulnerable to various security and privacy threats. This survey provide...

On the Impact of Sybil-Based Attacks on Mobile Crowdsensing for Transportation

Mobile Crowd-Sensing MCS enables users with personal mobile devices PMDs to gain information on their surroundings. Users collect and contribute data on different phenomena using their PMD sensors, and the MCS system processes this data to extract valuable information for end users. Navigation...

Sybil Attacks

github.com/libp2p/go-libp2p-kad-dht is vulnerable to Sybil attacks. The vulnerability is due to the method of assigning routing information based on the DHT distance between peer IDs and content IDs, allows attackers to generate many Sybil peers with small DHT distances, enabling them to disrupt ...

CVE-2018-7170

A flaw was found in ntpd making it vulnerable to Sybil attacks. An authenticated attacker could target systems configured to use a trusted key in certain configurations and to create an arbitrary number of associations and subsequently modify a victim's clock...

Network Time Protocol Ephemeral Association Time Spoofing Vulnerability(CVE-2016-1549)

SUMMARY ntpd is vulnerable to Sybil attacks. A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win ntpd's clock selection algorithm and modify a victim's clock. TESTED VERSIONS NTP 4.2.8p3 NTP 4.2.8p4 NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 NTPs...

Sybil Attacks

github.com/nebulouslabs/sia is vulnerable to sybil attacks. The attacks can be easily triggered because it does not prevent multiple connections from the same IP address. When bootstrap nodes are "full" i.e., 128 connections, it does not accept any new peers without disconnecting its current peer...

Researchers Show Break in Secure Data Storage System

A team of computer scientists from several universities has devised an attack that is capable of reconstructing the so-called vanishing data objects created by a system called Vanish, which was designed to create secure data objects that would expire after a set time and could never be recreated...