diff --git a/Basic_Computer_Skills_for_Forensics/4_Advanced_linux_command_line.pptx b/Basic_Computer_Skills_for_Forensics/4_Advanced_linux_command_line.pptx index b22b10f..88e54b2 100644 Binary files a/Basic_Computer_Skills_for_Forensics/4_Advanced_linux_command_line.pptx and b/Basic_Computer_Skills_for_Forensics/4_Advanced_linux_command_line.pptx differ diff --git a/Basic_Computer_Skills_for_Forensics/5_Introduction_to_digital_forensics.pptx b/Basic_Computer_Skills_for_Forensics/5_Introduction_to_digital_forensics.pptx index 94e3e9b..6f307db 100644 Binary files a/Basic_Computer_Skills_for_Forensics/5_Introduction_to_digital_forensics.pptx and b/Basic_Computer_Skills_for_Forensics/5_Introduction_to_digital_forensics.pptx differ diff --git a/Basic_Computer_Skills_for_Forensics/6_Sleuth_Kit_Tutorial.pptx b/Basic_Computer_Skills_for_Forensics/6_Sleuth_Kit_Tutorial.pptx index 7f725a7..f69574b 100644 Binary files a/Basic_Computer_Skills_for_Forensics/6_Sleuth_Kit_Tutorial.pptx and b/Basic_Computer_Skills_for_Forensics/6_Sleuth_Kit_Tutorial.pptx differ diff --git a/Basic_Computer_Skills_for_Forensics/7_USB_Image_Acquisition.pptx b/Basic_Computer_Skills_for_Forensics/7_USB_Image_Acquisition.pptx index 0cbae22..7216960 100644 Binary files a/Basic_Computer_Skills_for_Forensics/7_USB_Image_Acquisition.pptx and b/Basic_Computer_Skills_for_Forensics/7_USB_Image_Acquisition.pptx differ diff --git a/Basic_Computer_Skills_for_Forensics/8_Evidence_search_techniques.pptx b/Basic_Computer_Skills_for_Forensics/8_Evidence_search_techniques.pptx index f6f21b9..f45b631 100644 Binary files a/Basic_Computer_Skills_for_Forensics/8_Evidence_search_techniques.pptx and b/Basic_Computer_Skills_for_Forensics/8_Evidence_search_techniques.pptx differ diff --git a/Basic_Computer_Skills_for_Forensics/9_Data_Carving.pptx b/Basic_Computer_Skills_for_Forensics/9_Data_Carving.pptx index 2f01822..35c51ea 100644 Binary files a/Basic_Computer_Skills_for_Forensics/9_Data_Carving.pptx and b/Basic_Computer_Skills_for_Forensics/9_Data_Carving.pptx differ diff --git a/Basic_Computer_Skills_for_Forensics/steganography/_tower_original_image_for_lab.bmp b/Basic_Computer_Skills_for_Forensics/steganography/_tower_original_image_for_lab.bmp new file mode 100644 index 0000000..8d1737b Binary files /dev/null and b/Basic_Computer_Skills_for_Forensics/steganography/_tower_original_image_for_lab.bmp differ diff --git a/Basic_Computer_Skills_for_Forensics/steganography/_tower_with_hidden.bmp b/Basic_Computer_Skills_for_Forensics/steganography/_tower_with_hidden.bmp new file mode 100644 index 0000000..d9c937f Binary files /dev/null and b/Basic_Computer_Skills_for_Forensics/steganography/_tower_with_hidden.bmp differ