diff --git a/year4/semester2/CT437/materials/ct437_10a - Case Study Heartbleed.pdf b/year4/semester2/CT437/materials/ct437_10a - Case Study Heartbleed.pdf new file mode 100644 index 00000000..e77e48c4 Binary files /dev/null and b/year4/semester2/CT437/materials/ct437_10a - Case Study Heartbleed.pdf differ diff --git a/year4/semester2/CT437/materials/ct437_11 - IPSec.pdf b/year4/semester2/CT437/materials/ct437_11 - IPSec.pdf new file mode 100644 index 00000000..520f840d Binary files /dev/null and b/year4/semester2/CT437/materials/ct437_11 - IPSec.pdf differ diff --git a/year4/semester2/CT437/materials/merged.pdf b/year4/semester2/CT437/materials/merged.pdf new file mode 100644 index 00000000..520efcf2 Binary files /dev/null and b/year4/semester2/CT437/materials/merged.pdf differ