diff --git a/addons/auth_crypt/auth_crypt.py b/addons/auth_crypt/auth_crypt.py
index a7e3a826223..3aac70c1a59 100644
--- a/addons/auth_crypt/auth_crypt.py
+++ b/addons/auth_crypt/auth_crypt.py
@@ -11,7 +11,7 @@
 import hashlib
 import hmac
 import logging
-from random import sample
+import random
 from string import ascii_letters, digits
 
 import openerp
@@ -22,12 +22,13 @@ _logger = logging.getLogger(__name__)
 magic_md5 = '$1$'
 magic_sha256 = '$5$'
 
-openerp.addons.base.res.res_users.USER_PRIVATE_FIELDS.append('password_crypt')
+from openerp.addons.base.res import res_users
+res_users.USER_PRIVATE_FIELDS.append('password_crypt')
 
 def gen_salt(length=8, symbols=None):
     if symbols is None:
         symbols = ascii_letters + digits
-    return ''.join(sample(symbols, length))
+    return ''.join(random.SystemRandom().sample(symbols, length))
 
 def md5crypt( raw_pw, salt, magic=magic_md5 ):
     """ md5crypt FreeBSD crypt(3) based on but different from md5
diff --git a/addons/auth_signup/res_users.py b/addons/auth_signup/res_users.py
index 32aa22b2744..2385ce47d3b 100644
--- a/addons/auth_signup/res_users.py
+++ b/addons/auth_signup/res_users.py
@@ -35,7 +35,7 @@ class SignupError(Exception):
 def random_token():
     # the token has an entropy of about 120 bits (6 bits/char * 20 chars)
     chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
-    return ''.join(random.choice(chars) for i in xrange(20))
+    return ''.join(random.SystemRandom().choice(chars) for i in xrange(20))
 
 def now(**kwargs):
     dt = datetime.now() + timedelta(**kwargs)
diff --git a/addons/pad/pad.py b/addons/pad/pad.py
index 421d9b9ca62..518ab0badce 100644
--- a/addons/pad/pad.py
+++ b/addons/pad/pad.py
@@ -35,7 +35,7 @@ class pad_common(osv.osv_memory):
         pad["server"] = pad["server"].rstrip('/')
         # generate a salt
         s = string.ascii_uppercase + string.digits
-        salt = ''.join([s[random.randint(0, len(s) - 1)] for i in range(10)])
+        salt = ''.join([s[random.SystemRandom().randint(0, len(s) - 1)] for i in range(10)])
         #path
         # etherpad hardcodes pad id length limit to 50
         path = '-%s-%s' % (self._name, salt)
diff --git a/addons/share/wizard/share_wizard.py b/addons/share/wizard/share_wizard.py
index 493857fb88a..7b6ac427391 100644
--- a/addons/share/wizard/share_wizard.py
+++ b/addons/share/wizard/share_wizard.py
@@ -46,7 +46,7 @@ DOMAIN_ALL = [(1, '=', 1)]
 # A good selection of easy to read password characters (e.g. no '0' vs 'O', etc.)
 RANDOM_PASS_CHARACTERS = 'aaaabcdeeeefghjkmnpqrstuvwxyzAAAABCDEEEEFGHJKLMNPQRSTUVWXYZ23456789'
 def generate_random_pass():
-    return ''.join(random.sample(RANDOM_PASS_CHARACTERS,10))
+    return ''.join(random.SystemRandom().sample(RANDOM_PASS_CHARACTERS,10))
 
 class share_wizard(osv.TransientModel):
     _name = 'share.wizard'
diff --git a/addons/survey/wizard/survey_send_invitation.py b/addons/survey/wizard/survey_send_invitation.py
index e16d0d6ce77..d62664f4a58 100644
--- a/addons/survey/wizard/survey_send_invitation.py
+++ b/addons/survey/wizard/survey_send_invitation.py
@@ -20,7 +20,7 @@
 ##############################################################################
 
 import time
-from random import choice
+import random
 import string
 import os
 import datetime
@@ -53,7 +53,7 @@ class survey_send_invitation(osv.osv_memory):
 
     def genpasswd(self):
         chars = string.letters + string.digits
-        return ''.join([choice(chars) for i in range(6)])
+        return ''.join([random.SystemRandom().choice(chars) for i in range(6)])
 
     def default_get(self, cr, uid, fields_list, context=None):
         if context is None: