Have you heard about Spearphone, a newly demonstrated attack that takes advantage of a hardware-based motion sensor, called an accelerometer, which comes built into most Android devices and can be unrestrictedly accessed by any app installed on a device even with zero permissions? . Earlier this month, The Hacker News covered a story on research revealing how over 1300 Android apps are collecting sensitive data even when users have explicitly denied the required permissions. The research was primarily focused on how app developers abuse multiple ways around to collect location data, phone identifiers, and MAC addresses of their users by exploiting both covert and side channels. Now, a separate team of cybersecurity researchers has successfully demonstrated a new side-channel attack that could allow malicious apps to eavesdrop on the voice coming out of your smartphone's loudspeakers without requiring any device permission. The link for this article located at The Hacker News is no longer available. . Recent investigations reveal a vulnerability enabling applications to record audio from device speakers without explicit user consent, jeopardizing personal privacy.. Spearphone Attack, Android Security Issue, Malicious App Threats, User Data Privacy. . LinuxSecurity.com Team
If you have checked in with Foursquare in San Francisco in the last three weeks, Jesper Andersen probably knows where and when . Andersen, a coder who recently built a service called Avoidr that helps you avoid social network The link for this article located at Wired is no longer available. . A white hat hacker uncovered a vulnerability in Foursquare, exposing user check-ins and raising concerns over privacy and data security practices. Foursquare Privacy Risk, White Hat Research, Social Media Safety. . LinuxSecurity.com Team
The network protocol stack, which forms the carrier and pipeline of data from one host to another is designed in such a way that we can interact with different layers at desired level. This article is a small attempt to describe the movement of data through these stacked layers and at the end we will try to implement a linux kernel module which helps us to capture the data flowing out to TCP layer and display it. . . .. The network protocol stack, which forms the carrier and pipeline of data from one host to another is designed in such a way that we can interact with different layers at desired level. This article is a small attempt to describe the movement of data through these stacked layers and at the end we will try to implement a linux kernel module which helps us to capture the data flowing out to TCP layer and display it. I think to talk about all those really basic network communication is not necessary here. So I will straight away talk about the implementation of TCP/IP communication. Network devices form the bottom layer of the protocol stack. they use a link layer protocol (usually Ethernet) to communicate with other devices to send and receive traffic. The interface put up by the network device driver copy packets from a physical medium, perform some error checks,Then puts up the packet to the network layer. Output interfaces receive packets from the network layer, perform some error checks, and then send them out over the physical medium. Here we shall talk about the IP which is the standard standard network layer protocol. The main functionality of IP is routing , it checks incoming packets to see if they are for the host computer or if they need to be forwarded. It defragments packets if necessary and delivers them to the transport protocols. It has a dynamic database of routes for outgoing packets; it addresses and fragments them if necessary before sending them down to the link layer. The link for this article located at LinuxGazzette is no longer available. . Grasping the networkprotocol stack is vital for those engaged in data transmission and capture, as it comprises layers with distinct functions to enable seamless communication.. Networking, TCP/IP, Data Analysis, Linux Kernel, Protocol Stack. . Anthony Pell
Get the latest Linux and open source security news straight to your inbox.