Linux

Posts tagged "Linux"

8 posts found

LinuxReverse EngineeringAnti-Debugging

Anti-Debugging for Noobs, Part 1: How a Program Notices the Debugger

First principles of anti-debugging on Linux: the one-tracer rule, ptrace self-trace, TracerPid in /proc, parent checks, timing gaps and 0xCC breakpoint scanning, plus how analysts answer each check.

First principles of anti-debugging on Linux: the one-tracer rule, ptrace self-trace, TracerPid in /proc, parent checks, timing gaps and 0xCC breakpoint scanning, plus how analysts answer each check.

15 min read
2,838 words
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ibrahimsql

Cybersecurity Engineer

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LinuxKeyloggingInput Subsystem

Keylogging on Linux, Part 1: From Kernel Key Handling to the X Server

How a key press travels through the kernel keyboard driver, the input subsystem, evdev and /dev/input/event nodes, then through the X server input pipeline and XKB keymap, and where loggers hook in.

How a key press travels through the kernel keyboard driver, the input subsystem, evdev and /dev/input/event nodes, then through the X server input pipeline and XKB keymap, and where loggers hook in.

48 min read
9,418 words
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ibrahimsql

Cybersecurity Engineer

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LinuxWaylandpolkit

Security Architecture of Authorisation and Authentication UIs on the Linux Desktop

A deep architectural analysis of password prompts and permission dialogs on modern Linux: how Wayland, polkit, PAM, and xdg-desktop-portal isolate credentials and capabilities as of 2026.

A deep architectural analysis of password prompts and permission dialogs on modern Linux: how Wayland, polkit, PAM, and xdg-desktop-portal isolate credentials and capabilities as of 2026.

20 min read
3,830 words
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ibrahimsql

Cybersecurity Engineer

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WaylandLinuxSecurity Architecture

Wayland Compositor Security Architecture and Privileged Client Management

A deep architectural analysis of display server security: the input/output CIA triad, screencasting, input emulation (libei/EIS), session locking (ext-session-lock-v1), and sandbox isolation (security-context-v1) under 2026 standards.

A deep architectural analysis of display server security: the input/output CIA triad, screencasting, input emulation (libei/EIS), session locking (ext-session-lock-v1), and sandbox isolation (security-context-v1) under 2026 standards.

20 min read
3,868 words
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ibrahimsql

Cybersecurity Engineer

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Reverse EngineeringLinuxELF
Featured

Modern Linux Binary Exploitation: Memory Layout, Compiler Mitigations, and Gadget Mechanics

An in-depth technical manual on x86_64 ELF memory corruption mechanics, compiler mitigations (Canaries, Full RELRO, PIE, Intel CET), sanitizer triage, and defensive binary engineering.

An in-depth technical manual on x86_64 ELF memory corruption mechanics, compiler mitigations (Canaries, Full RELRO, PIE, Intel CET), sanitizer triage, and defensive binary engineering.

16 min read
3,101 words
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ibrahimsql

Cybersecurity Engineer

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Cybersecurity24Reverse Engineering11Web Security11API Security5Mobile Security4Defense4Authorization4Tools4Bug Bounty4Penetration Testing4Frida3IDOR3Access Control3Testing3Ethical Hacking3AI3Pentest2Wayland2Security Architecture2Burp Suite2