diff --git a/Distributed Systems and consensus.pdf b/Distributed Systems and consensus.pdf new file mode 100644 index 0000000..648c817 Binary files /dev/null and b/Distributed Systems and consensus.pdf differ diff --git a/Is Stellar As Secure As You Think.pdf b/Is Stellar As Secure As You Think.pdf new file mode 100644 index 0000000..7e47f2e Binary files /dev/null and b/Is Stellar As Secure As You Think.pdf differ