diff --git a/pdf/2006-Locating_Hidden_Servers.pdf b/pdf/2006-Locating_Hidden_Servers.pdf
new file mode 100644
index 0000000000..60c8984fc6
Binary files /dev/null and b/pdf/2006-Locating_Hidden_Servers.pdf differ
diff --git a/pdf/2018-DeepCorr_Strong_Flow_Correlation_Attacks_on_Tor_Using_Deep_Learning.pdf b/pdf/2018-DeepCorr_Strong_Flow_Correlation_Attacks_on_Tor_Using_Deep_Learning.pdf
new file mode 100644
index 0000000000..9cbcf0be28
Binary files /dev/null and b/pdf/2018-DeepCorr_Strong_Flow_Correlation_Attacks_on_Tor_Using_Deep_Learning.pdf differ