diff --git a/Calisto/Spearphishing-cases-in-Eastern-Europe-2022-2024-technical-brief.pdf b/Calisto/Spearphishing-cases-in-Eastern-Europe-2022-2024-technical-brief.pdf
new file mode 100644
index 0000000..8705a8f
Binary files /dev/null and b/Calisto/Spearphishing-cases-in-Eastern-Europe-2022-2024-technical-brief.pdf differ