diff --git a/Extreme-Privacy-What-It-Takes-to-Disappear.pdf b/Extreme-Privacy-What-It-Takes-to-Disappear.pdf new file mode 100644 index 0000000..4a5ea4c Binary files /dev/null and b/Extreme-Privacy-What-It-Takes-to-Disappear.pdf differ diff --git a/Practical-Linux-Forensics-A-Guide-for-Digital-Investigators.pdf b/Practical-Linux-Forensics-A-Guide-for-Digital-Investigators.pdf new file mode 100644 index 0000000..89c241f Binary files /dev/null and b/Practical-Linux-Forensics-A-Guide-for-Digital-Investigators.pdf differ diff --git a/The Basics of Hacking and Penetration Testing (Patrick Engebretson 2013 2nd ed).pdf b/The Basics of Hacking and Penetration Testing (Patrick Engebretson 2013 2nd ed).pdf new file mode 100644 index 0000000..1ed1893 Binary files /dev/null and b/The Basics of Hacking and Penetration Testing (Patrick Engebretson 2013 2nd ed).pdf differ diff --git a/hiding-behind-the-keyboard-uncovering-covert-communication-methods-with-forensic-analysis.pdf b/hiding-behind-the-keyboard-uncovering-covert-communication-methods-with-forensic-analysis.pdf new file mode 100644 index 0000000..a925767 Binary files /dev/null and b/hiding-behind-the-keyboard-uncovering-covert-communication-methods-with-forensic-analysis.pdf differ