diff --git a/deployment_scripts/deploy_linux.sh b/deployment_scripts/deploy_linux.sh
index 4e641407e..834d811a7 100755
--- a/deployment_scripts/deploy_linux.sh
+++ b/deployment_scripts/deploy_linux.sh
@@ -1,10 +1,14 @@
 #!/bin/bash
 source config
 
+exists() {
+  command -v "$1" >/dev/null 2>&1
+}
+
 # Setup monkey either in dir required or current dir
-monkey_home=${1:-`pwd`}
-if [[ $monkey_home == `pwd` ]]; then
-    monkey_home="$monkey_home/$MONKEY_FOLDER_NAME"
+monkey_home=${1:-$(pwd)}
+if [[ $monkey_home == $(pwd) ]]; then
+  monkey_home="$monkey_home/$MONKEY_FOLDER_NAME"
 fi
 
 # We can set main paths after we know the home dir
@@ -15,55 +19,58 @@ ISLAND_BINARIES_PATH="$ISLAND_PATH/cc/binaries"
 INFECTION_MONKEY_DIR="$monkey_home/monkey/infection_monkey"
 MONKEY_BIN_DIR="$INFECTION_MONKEY_DIR/bin"
 
-handle_error () {
-    echo "Fix the errors above and rerun the script"
-    exit 1
+handle_error() {
+  echo "Fix the errors above and rerun the script"
+  exit 1
 }
 
-log_message () {
-    echo -e "\n\n-------------------------------------------"
-    echo -e "DEPLOYMENT SCRIPT: $1"
-    echo -e "-------------------------------------------\n"
+log_message() {
+  echo -e "\n\n-------------------------------------------"
+  echo -e "DEPLOYMENT SCRIPT: $1"
+  echo -e "-------------------------------------------\n"
 }
 
 sudo -v
 if [[ $? != 0 ]]; then
-    echo "You need root permissions for some of this script operations. Quiting."
-    exit 1
+  echo "You need root permissions for some of this script operations. Quiting."
+  exit 1
 fi
 
 if [[ ! -d ${monkey_home} ]]; then
-    mkdir -p ${monkey_home}
+  mkdir -p "${monkey_home}"
 fi
 
-git --version &>/dev/null
-git_available=$?
-if [[ ${git_available} != 0 ]]; then
-    echo "Please install git and re-run this script"
+if ! exists git; then
+  echo "Please install git and re-run this script"
+  exit 1
+fi
+
+if ! exists wget; then
+    echo 'Your system does have wget, please install and re-run this script'
     exit 1
 fi
 
 log_message "Cloning files from git"
 branch=${2:-"develop"}
 if [[ ! -d "$monkey_home/monkey" ]]; then # If not already cloned
-    git clone --single-branch -b $branch ${MONKEY_GIT_URL} ${monkey_home} 2>&1 || handle_error
-    chmod 774 -R ${monkey_home}
+  git clone --single-branch -b "$branch" "${MONKEY_GIT_URL}" "${monkey_home}" 2>&1 || handle_error
+  chmod 774 -R "${monkey_home}"
 fi
 
 # Create folders
 log_message "Creating island dirs under $ISLAND_PATH"
-mkdir -p ${MONGO_PATH}
-mkdir -p ${ISLAND_BINARIES_PATH} || handle_error
+mkdir -p "${MONGO_PATH}"
+mkdir -p "${ISLAND_BINARIES_PATH}" || handle_error
 
 # Detecting command that calls python 3.7
 python_cmd=""
-if [[ `python --version 2>&1` == *"Python 3.7"* ]]; then
+if [[ $(python --version 2>&1) == *"Python 3.7"* ]]; then
   python_cmd="python"
 fi
-if [[ `python37 --version 2>&1` == *"Python 3.7"* ]]; then
+if [[ $(python37 --version 2>&1) == *"Python 3.7"* ]]; then
   python_cmd="python37"
 fi
-if [[ `python3.7 --version 2>&1` == *"Python 3.7"* ]]; then
+if [[ $(python3.7 --version 2>&1) == *"Python 3.7"* ]]; then
   python_cmd="python3.7"
 fi
 
@@ -92,7 +99,7 @@ ${python_cmd} -m pip install --user --upgrade -r ${requirements} || handle_error
 
 log_message "Installing monkey requirements"
 sudo apt-get install libffi-dev upx libssl-dev libc++1
-cd ${monkey_home}/monkey/infection_monkey || handle_error
+cd "${monkey_home}"/monkey/infection_monkey || handle_error
 ${python_cmd} -m pip install -r requirements.txt --user --upgrade || handle_error
 
 # Download binaries
@@ -105,21 +112,23 @@ wget -c -N -P ${ISLAND_BINARIES_PATH} ${WINDOWS_64_BINARY_URL}
 chmod a+x "$ISLAND_BINARIES_PATH/$LINUX_32_BINARY_NAME"
 chmod a+x "$ISLAND_BINARIES_PATH/$LINUX_64_BINARY_NAME"
 
-
 # Get machine type/kernel version
-kernel=`uname -m`
-linux_dist=`lsb_release -a 2> /dev/null`
+kernel=$(uname -m)
+linux_dist=$(lsb_release -a 2>/dev/null)
 
 # If a user haven't installed mongo manually check if we can install it with our script
 log_message "Installing MongoDB"
-${ISLAND_PATH}/linux/install_mongo.sh ${MONGO_PATH} || handle_error
+"${ISLAND_PATH}"/linux/install_mongo.sh ${MONGO_PATH} || handle_error
 
 log_message "Installing openssl"
 sudo apt-get install openssl
 
 # Generate SSL certificate
 log_message "Generating certificate"
-cd ${ISLAND_PATH}
+cd "${ISLAND_PATH}" || {
+  echo "cd failed"
+  exit 1
+}
 openssl genrsa -out cc/server.key 2048
 openssl req -new -key cc/server.key -out cc/server.csr -subj "/C=GB/ST=London/L=London/O=Global Security/OU=Monkey Department/CN=monkey.com"
 openssl x509 -req -days 366 -in cc/server.csr -signkey cc/server.key -out cc/server.crt
@@ -137,20 +146,19 @@ log_message "Generating front end"
 npm run dist
 
 # Making dir for binaries
-mkdir ${MONKEY_BIN_DIR}
+mkdir "${MONKEY_BIN_DIR}"
 
 # Download sambacry binaries
 log_message "Downloading sambacry binaries"
-wget -c -N -P ${MONKEY_BIN_DIR} ${SAMBACRY_64_BINARY_URL}
-wget -c -N -P ${MONKEY_BIN_DIR} ${SAMBACRY_32_BINARY_URL}
+wget -c -N -P "${MONKEY_BIN_DIR}" "${SAMBACRY_64_BINARY_URL}"
+wget -c -N -P "${MONKEY_BIN_DIR}" "${SAMBACRY_32_BINARY_URL}"
 
 # Download traceroute binaries
 log_message "Downloading traceroute binaries"
-wget -c -N -P ${MONKEY_BIN_DIR} ${TRACEROUTE_64_BINARY_URL}
-wget -c -N -P ${MONKEY_BIN_DIR} ${TRACEROUTE_32_BINARY_URL}
+wget -c -N -P "${MONKEY_BIN_DIR}" "${TRACEROUTE_64_BINARY_URL}"
+wget -c -N -P "${MONKEY_BIN_DIR}" "${TRACEROUTE_32_BINARY_URL}"
 
-
-sudo chmod +x ${monkey_home}/monkey/infection_monkey/build_linux.sh
+sudo chmod +x "${monkey_home}"/monkey/infection_monkey/build_linux.sh
 
 log_message "Deployment script finished."
 exit 0
diff --git a/monkey/monkey_island/deb-package/DEBIAN/control b/monkey/monkey_island/deb-package/DEBIAN/control
index 2693afbd9..88723149c 100644
--- a/monkey/monkey_island/deb-package/DEBIAN/control
+++ b/monkey/monkey_island/deb-package/DEBIAN/control
@@ -5,4 +5,4 @@ Homepage: http://www.guardicore.com
 Priority: optional
 Version: 1.0
 Description: Guardicore Infection Monkey Island installation package
-Depends: openssl, python-pip, python-dev
+Depends: openssl, python3-pip, python3-dev
diff --git a/monkey/monkey_island/deb-package/DEBIAN/postinst b/monkey/monkey_island/deb-package/DEBIAN/postinst
index 8efc19bbb..93053a76e 100644
--- a/monkey/monkey_island/deb-package/DEBIAN/postinst
+++ b/monkey/monkey_island/deb-package/DEBIAN/postinst
@@ -5,8 +5,8 @@ INSTALLATION_FOLDER=/var/monkey/monkey_island/installation
 PYTHON_FOLDER=/var/monkey/monkey_island/bin/python
 
 # Prepare python virtualenv
-pip2 install virtualenv --no-index --find-links file://$INSTALLATION_FOLDER
-virtualenv -p python2.7 ${PYTHON_FOLDER}
+pip3 install virtualenv --no-index --find-links file://$INSTALLATION_FOLDER
+virtualenv -p python3 ${PYTHON_FOLDER}
 
 # install pip requirements
 ${PYTHON_FOLDER}/bin/python -m pip install -r $MONKEY_FOLDER/monkey_island/requirements.txt --no-index --find-links file://$INSTALLATION_FOLDER
diff --git a/monkey/monkey_island/deb-package/DEBIAN_MONGO/postinst b/monkey/monkey_island/deb-package/DEBIAN_MONGO/postinst
index 76e57caa3..42dc2d5a2 100644
--- a/monkey/monkey_island/deb-package/DEBIAN_MONGO/postinst
+++ b/monkey/monkey_island/deb-package/DEBIAN_MONGO/postinst
@@ -5,8 +5,8 @@ INSTALLATION_FOLDER=/var/monkey/monkey_island/installation
 PYTHON_FOLDER=/var/monkey/monkey_island/bin/python
 
 # Prepare python virtualenv
-pip2 install virtualenv --no-index --find-links file://$INSTALLATION_FOLDER
-virtualenv -p python2.7 ${PYTHON_FOLDER}
+pip3 install virtualenv --no-index --find-links file://$INSTALLATION_FOLDER
+virtualenv -p python3 ${PYTHON_FOLDER}
 
 # install pip requirements
 ${PYTHON_FOLDER}/bin/python -m pip install -r $MONKEY_FOLDER/monkey_island/requirements.txt --no-index --find-links file://$INSTALLATION_FOLDER
diff --git a/monkey/monkey_island/linux/install.sh b/monkey/monkey_island/linux/install.sh
index d4ebfedbe..ab03e4798 100644
--- a/monkey/monkey_island/linux/install.sh
+++ b/monkey/monkey_island/linux/install.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-MACHINE_TYPE=`uname -m`
-if [ ${MACHINE_TYPE} == 'x86_64' ]; then
+MACHINE_TYPE=$(uname -m)
+if [ "${MACHINE_TYPE}" == 'x86_64' ]; then
   # 64-bit stuff here
   ARCH=64
 else
@@ -11,4 +11,4 @@ fi
 
 MONKEY_FILE=monkey-linux-$ARCH
 cp -f /var/monkey/monkey_island/cc/binaries/$MONKEY_FILE /tmp
-/tmp/$MONKEY_FILE m0nk3y $@
+/tmp/$MONKEY_FILE m0nk3y "$@"
diff --git a/monkey/monkey_island/linux/install_mongo.sh b/monkey/monkey_island/linux/install_mongo.sh
index 478d7e0ed..51091d144 100755
--- a/monkey/monkey_island/linux/install_mongo.sh
+++ b/monkey/monkey_island/linux/install_mongo.sh
@@ -1,40 +1,58 @@
 #!/bin/bash
 
-export os_version_monkey=$(cat /etc/issue)
+exists() {
+  command -v "$1" >/dev/null 2>&1
+}
+
+os_version_monkey=$(cat /etc/issue)
+export os_version_monkey
 MONGODB_DIR=$1 # If using deb, this should be: /var/monkey/monkey_island/bin/mongodb
 
-if [[ ${os_version_monkey} == "Ubuntu 16.04"* ]] ;
-then
-	echo Detected Ubuntu 16.04
-	export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu1604-3.6.12.tgz"
-elif [[ ${os_version_monkey} == "Ubuntu 18.04"* ]] ;
-then
-	echo Detected Ubuntu 18.04
-	export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu1804-4.2.0.tgz"
-elif [[ ${os_version_monkey} == "Debian GNU/Linux 8"* ]] ;
-then
-	echo Detected Debian 8
-	export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-debian81-3.6.12.tgz"
-elif [[ ${os_version_monkey} == "Debian GNU/Linux 9"* ]] ;
-then
-	echo Detected Debian 9
-	export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-debian92-3.6.12.tgz"
+if [[ ${os_version_monkey} == "Ubuntu 16.04"* ]]; then
+  echo Detected Ubuntu 16.04
+  export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu1604-3.6.12.tgz"
+elif [[ ${os_version_monkey} == "Ubuntu 18.04"* ]]; then
+  echo Detected Ubuntu 18.04
+  export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu1804-4.2.0.tgz"
+elif [[ ${os_version_monkey} == "Debian GNU/Linux 8"* ]]; then
+  echo Detected Debian 8
+  export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-debian81-3.6.12.tgz"
+elif [[ ${os_version_monkey} == "Debian GNU/Linux 9"* ]]; then
+  echo Detected Debian 9
+  export tgz_url="https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-debian92-3.6.12.tgz"
 else
-	echo Unsupported OS
-	exit -1
+  echo Unsupported OS
+  exit 1
 fi
 
 TEMP_MONGO=$(mktemp -d)
-pushd ${TEMP_MONGO}
-wget ${tgz_url} -O mongodb.tgz
+pushd "${TEMP_MONGO}" || {
+  echo "Pushd failed"
+  exit 1
+}
+
+if exists wget; then
+  wget ${tgz_url} -O mongodb.tgz
+else
+  if exists curl; then
+    curl --output mongodb.tgz ${tgz_url}
+  else
+    echo 'Your system has neither curl nor wget, exiting'
+    exit 1
+  fi
+fi
+
 tar -xf mongodb.tgz
-popd
+popd || {
+  echo "popd failed"
+  exit 1
+}
 
-mkdir -p ${MONGODB_DIR}/bin
-mkdir -p ${MONGODB_DIR}/db
-cp ${TEMP_MONGO}/mongodb-*/bin/mongod ${MONGODB_DIR}/bin/mongod
-cp ${TEMP_MONGO}/mongodb-*/LICENSE-Community.txt ${MONGODB_DIR}/
-chmod a+x ${MONGODB_DIR}/bin/mongod
-rm -r ${TEMP_MONGO}
+mkdir -p "${MONGODB_DIR}"/bin
+mkdir -p "${MONGODB_DIR}"/db
+cp "${TEMP_MONGO}"/mongodb-*/bin/mongod "${MONGODB_DIR}"/bin/mongod
+cp "${TEMP_MONGO}"/mongodb-*/LICENSE-Community.txt "${MONGODB_DIR}"/
+chmod a+x "${MONGODB_DIR}"/bin/mongod
+rm -r "${TEMP_MONGO}"
 
-exit 0
\ No newline at end of file
+exit 0
diff --git a/monkey/monkey_island/linux/monkey.sh b/monkey/monkey_island/linux/monkey.sh
index d4ebfedbe..ab03e4798 100644
--- a/monkey/monkey_island/linux/monkey.sh
+++ b/monkey/monkey_island/linux/monkey.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-MACHINE_TYPE=`uname -m`
-if [ ${MACHINE_TYPE} == 'x86_64' ]; then
+MACHINE_TYPE=$(uname -m)
+if [ "${MACHINE_TYPE}" == 'x86_64' ]; then
   # 64-bit stuff here
   ARCH=64
 else
@@ -11,4 +11,4 @@ fi
 
 MONKEY_FILE=monkey-linux-$ARCH
 cp -f /var/monkey/monkey_island/cc/binaries/$MONKEY_FILE /tmp
-/tmp/$MONKEY_FILE m0nk3y $@
+/tmp/$MONKEY_FILE m0nk3y "$@"
diff --git a/monkey/monkey_island/linux/run.sh b/monkey/monkey_island/linux/run.sh
index 54e1cdd65..2a5c45bbe 100644
--- a/monkey/monkey_island/linux/run.sh
+++ b/monkey/monkey_island/linux/run.sh
@@ -2,13 +2,13 @@
 
 # Detecting command that calls python 3.7
 python_cmd=""
-if [[ `python --version 2>&1` == *"Python 3.7"* ]]; then
+if [[ $(python --version 2>&1) == *"Python 3.7"* ]]; then
   python_cmd="python"
 fi
-if [[ `python37 --version 2>&1` == *"Python 3.7"* ]]; then
+if [[ $(python37 --version 2>&1) == *"Python 3.7"* ]]; then
   python_cmd="python37"
 fi
-if [[ `python3.7 --version 2>&1` == *"Python 3.7"* ]]; then
+if [[ $(python3.7 --version 2>&1) == *"Python 3.7"* ]]; then
   python_cmd="python3.7"
 fi