From 88771394571df997bcc2560225ab8a36716b8279 Mon Sep 17 00:00:00 2001
From: Anh Nguyen-Tuong <zenpoems@gmail.com>
Date: Tue, 4 Sep 2018 21:38:28 +0000
Subject: [PATCH] Update README.md

---
 README.md | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index f92e5ed..cbb63e6 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,13 @@
 # Zafl (Zipr-based AFL)
 
-Welcome to *Zafl*, a project to fuzz X86 64-bit binary programs.
+Welcome to *Zafl*, a project to fuzz X86 64-bit binary programs. 
+
+Key features of Zafl:
+* Uses Zipr, a fast, space-efficient binary rewriter to inline AFL-style instrumentations
+  * Preliminary overhead: 
+     * On average 20% slower than afl/source code
+     * 15% faster than afl/dyninst
+     * a **lot** faster than afl/QEMU
 
 ## Installation
 Note that you will need **sudo** privileges to get and install all the required packages.
@@ -12,4 +19,4 @@ cd zafl_umbrella
 ./build-all.sh
 ```
 
-Building Zafl takes approximately XX minutes.
\ No newline at end of file
+Building Zafl takes approximately 10 minutes.
\ No newline at end of file
-- 
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