diff --git a/lib/mangopay/common/json_tag_converter.rb b/lib/mangopay/common/json_tag_converter.rb
index 4c67a6e..e601eb1 100644
--- a/lib/mangopay/common/json_tag_converter.rb
+++ b/lib/mangopay/common/json_tag_converter.rb
@@ -8,39 +8,42 @@ class << self
       # its API UpperCamelCase counterpart.
       def to_json_tag(field)
         field.split('_').collect do |word|
-          apply_capitalization word
+          apply_capitalization! word
         end.join
       end
 
-      # Applies necessary capitalization to a word
-      # in order to match API conventions.
-      def apply_capitalization(word)
-        word.sub!('kyc', 'KYC')
-        word.sub!('url', 'URL')
-        word.sub!('iban', 'IBAN')
-        word.sub!('bic', 'BIC')
-        word.sub!('aba', 'ABA')
-        word.sub!('ubo', 'UBO')
-        word[0] = word[0].upcase
-        word
-      end
-
       # Converts an API-returned UpperCamelCase-named JSON tag
       # to its Ruby-standard snake_case counterpart.
       def from_json_tag(tag)
-        tag = tag.sub('UBO', 'Ubo')
+        tag = tag.sub('UBO', 'Ubo').sub('AVS', 'Avs')
         parts = tag.split(/(?=[A-Z])/)
         parts = compress_upcase_strings(parts)
         field = ''
         parts.each.with_index do |part, index|
-          decapitalize part
+          decapitalize! part
           field << '_' if !field.empty? && (part.length > 1\
-          || (part == 'e' && parts[index + 1] == 'Money'))
+           || (part == 'e' && parts[index + 1] == 'Money'))
           field << part
         end
         field
       end
 
+      private
+
+      # Applies necessary capitalization to a word
+      # in order to match API conventions.
+      def apply_capitalization!(word)
+        word.sub!('kyc', 'KYC')
+        word.sub!('url', 'URL')
+        word.sub!('iban', 'IBAN')
+        word.sub!('bic', 'BIC')
+        word.sub!('aba', 'ABA')
+        word.sub!('ubo', 'UBO')
+        word.sub!('avs', 'AVS')
+        word[0] = word[0].upcase
+        word
+      end
+
       # Takes an array of strings and sticks together those
       # which are single uppercase letters in order to form
       # the actual words they compose.
@@ -59,7 +62,7 @@ def compress_upcase_strings(strings)
         current.empty? ? result : result << current
       end
 
-      def decapitalize(word)
+      def decapitalize!(word)
         word[0] = word[0].downcase
         word
       end
diff --git a/lib/mangopay/common/jsonifier.rb b/lib/mangopay/common/jsonifier.rb
index 7ac8ac6..d547b50 100644
--- a/lib/mangopay/common/jsonifier.rb
+++ b/lib/mangopay/common/jsonifier.rb
@@ -49,6 +49,7 @@ def jsonify!
     # @param +hash+ [Hash] hash converted from an API-returned JSON string
     # @return [Object] corresponding object (typed)
     def dejsonify(hash)
+      return nil unless hash
       hash.each do |tag, value|
         field = JsonTagConverter.from_json_tag tag
         field_value = nil
@@ -130,8 +131,7 @@ def dejsonify(hash)
                           raise 'Unrecognized bank account type: ' + value['Type']
                         end
         end
-        unless field_value
-          field_value = case field
+        field_value ||= case field
                         when *MangoModel.fields_of_type(MangoModel::Address)
                           MangoModel::Address.new.dejsonify value
                         when *MangoModel.fields_of_type(MangoModel::Money)
@@ -142,6 +142,10 @@ def dejsonify(hash)
                           MangoModel::DisputeReason.new.dejsonify value
                         when *MangoModel.fields_of_type(MangoModel::PlatformCategorization)
                           MangoModel::PlatformCategorization.new.dejsonify value
+                        when *MangoModel.fields_of_type(MangoModel::Billing)
+                          MangoModel::Billing.new.dejsonify value
+                        when *MangoModel.fields_of_type(MangoModel::SecurityInfo)
+                          MangoModel::SecurityInfo.new.dejsonify value
                         when *MangoModel.fields_of_type(MangoModel::PersonType)
                           MangoModel::PersonType.value_of value
                         when *MangoModel.fields_of_type(MangoModel::KycLevel)
@@ -206,12 +210,13 @@ def dejsonify(hash)
                           MangoModel::BusinessType.value_of value
                         when *MangoModel.fields_of_type(MangoModel::Sector)
                           MangoModel::Sector.value_of value
+                        when *MangoModel.fields_of_type(MangoModel::AvsResult)
+                          MangoModel::AvsResult.value_of value
                         when *MangoModel.fields_of_type(DateTime)
                           DateTime.parse value
                         else
                           value
                         end
-        end
         instance_variable_set "@#{field}", field_value
       end
       LOG.debug 'DE-JSONIFIED {}', hash
diff --git a/lib/mangopay/model/billing.rb b/lib/mangopay/model/billing.rb
new file mode 100644
index 0000000..07c6fe6
--- /dev/null
+++ b/lib/mangopay/model/billing.rb
@@ -0,0 +1,13 @@
+require_relative '../common/jsonifier'
+
+module MangoModel
+
+  # Billing information
+  class Billing
+    include MangoPay::Jsonifier
+
+    # [Address] The billing address
+    attr_accessor :address
+
+  end
+end
\ No newline at end of file
diff --git a/lib/mangopay/model/entity/pay_in/card_direct_pay_in.rb b/lib/mangopay/model/entity/pay_in/card_direct_pay_in.rb
index 0ee3194..175e6bd 100644
--- a/lib/mangopay/model/entity/pay_in/card_direct_pay_in.rb
+++ b/lib/mangopay/model/entity/pay_in/card_direct_pay_in.rb
@@ -29,5 +29,11 @@ class CardDirectPayIn < PayIn
     # [String] The URL where to redirect users to proceed to
     # 3D secure validation
     attr_accessor :secure_mode_redirect_url
+
+    # [Billing] Billing information
+    attr_accessor :billing
+
+    # [SecurityInfo] Security & Validation information
+    attr_accessor :security_info
   end
 end
\ No newline at end of file
diff --git a/lib/mangopay/model/entity/pre_authorization.rb b/lib/mangopay/model/entity/pre_authorization.rb
index 60f540d..9bcdc55 100644
--- a/lib/mangopay/model/entity/pre_authorization.rb
+++ b/lib/mangopay/model/entity/pre_authorization.rb
@@ -64,5 +64,12 @@ class PreAuthorization < EntityBase
 
     # [String] ID of the associated Pay-in
     attr_accessor :pay_in_id
+
+    # [Billing] Billing information
+    attr_accessor :billing
+
+    # [SecurityInfo] Security & validation information
+    attr_accessor :security_info
+
   end
 end
\ No newline at end of file
diff --git a/lib/mangopay/model/enum/avs_result.rb b/lib/mangopay/model/enum/avs_result.rb
new file mode 100644
index 0000000..caedafe
--- /dev/null
+++ b/lib/mangopay/model/enum/avs_result.rb
@@ -0,0 +1,19 @@
+require_relative '../../util/enum'
+
+module MangoModel
+
+  # Result of an AVS verification
+  class AvsResult
+    extend Enum
+
+    FULL_MATCH = value 'FULL_MATCH'
+
+    ADDRESS_MATCH_ONLY = value 'ADDRESS_MATCH_ONLY'
+
+    POSTAL_CODE_MATCH_ONLY = value 'POSTAL_CODE_MATCH_ONLY'
+
+    NO_MATCH = value 'NO_MATCH'
+
+    NO_CHECK = value 'NO_CHECK'
+  end
+end
\ No newline at end of file
diff --git a/lib/mangopay/model/model.rb b/lib/mangopay/model/model.rb
index b2d681b..ef44585 100644
--- a/lib/mangopay/model/model.rb
+++ b/lib/mangopay/model/model.rb
@@ -49,6 +49,7 @@
 require_relative 'enum/report_status'
 require_relative 'enum/business_type'
 require_relative 'enum/sector'
+require_relative 'enum/avs_result'
 require_relative 'entity/user/user'
 require_relative 'entity/user/natural_user'
 require_relative 'entity/user/legal_user'
@@ -68,6 +69,8 @@
 require_relative 'document_page_consult'
 require_relative 'dispute_reason'
 require_relative 'platform_categorization'
+require_relative 'billing'
+require_relative 'security_info'
 
 # Module for model classes.
 module MangoModel
@@ -126,7 +129,10 @@ module MangoModel
     ReportType => %w[report_type],
     Sector => %w[sector],
     BusinessType => %w[business_type],
-    PlatformCategorization => %w[platform_categorization]
+    PlatformCategorization => %w[platform_categorization],
+    Billing => %w[billing],
+    SecurityInfo => %w[security_info],
+    AvsResult => %w[avs_result]
   }
 
   class << self
diff --git a/lib/mangopay/model/security_info.rb b/lib/mangopay/model/security_info.rb
new file mode 100644
index 0000000..5974af5
--- /dev/null
+++ b/lib/mangopay/model/security_info.rb
@@ -0,0 +1,13 @@
+require_relative '../common/jsonifier'
+
+module MangoModel
+
+  # Security & validation information
+  class SecurityInfo
+    include MangoPay::Jsonifier
+
+    # [AVSResult] Result of the AVS verification
+    attr_accessor :avs_result
+
+  end
+end
\ No newline at end of file
diff --git a/spec/context/pay_in_context.rb b/spec/context/pay_in_context.rb
index f4d7d4e..4bd9e55 100644
--- a/spec/context/pay_in_context.rb
+++ b/spec/context/pay_in_context.rb
@@ -93,6 +93,10 @@ def build_card_direct_pay_in
   pay_in.card_id = CARD.id
   pay_in.secure_mode = MangoModel::SecureMode::DEFAULT
   pay_in.statement_descriptor = 'Mar2016'
+  billing = MangoModel::Billing.new
+  billing.address = build_address
+  billing.address.postal_code = '68400'
+  pay_in.billing = billing
   pay_in
 end
 
diff --git a/spec/context/pre_authorization_context.rb b/spec/context/pre_authorization_context.rb
index 5d5b33c..af19500 100644
--- a/spec/context/pre_authorization_context.rb
+++ b/spec/context/pre_authorization_context.rb
@@ -25,6 +25,10 @@ def build_pre_authorization
   pre_auth.secure_mode = MangoModel::SecureMode::DEFAULT
   pre_auth.card_id = CARD.id
   pre_auth.secure_mode_return_url = 'http://www.my-site.com/returnURL'
+  billing = MangoModel::Billing.new
+  billing.address = build_address
+  billing.address.postal_code = '68400'
+  pre_auth.billing = billing
   pre_auth
 end
 
diff --git a/spec/mangopay/pay_ins_spec.rb b/spec/mangopay/pay_ins_spec.rb
index 9090933..2142452 100644
--- a/spec/mangopay/pay_ins_spec.rb
+++ b/spec/mangopay/pay_ins_spec.rb
@@ -35,6 +35,7 @@
           expect(created.status).to be MangoModel::TransactionStatus::SUCCEEDED
           expect(created.payment_type).to be MangoModel::PayInPaymentType::CARD
           expect(created.execution_type).to be MangoModel::PayInExecutionType::DIRECT
+          expect(created.security_info.avs_result).to be MangoModel::AvsResult::FULL_MATCH
           expect(its_the_same_card_direct(pay_in, created)).to be_truthy
         end
       end
diff --git a/spec/mangopay/pre_authorizations_spec.rb b/spec/mangopay/pre_authorizations_spec.rb
index 7be7d27..11a887a 100644
--- a/spec/mangopay/pre_authorizations_spec.rb
+++ b/spec/mangopay/pre_authorizations_spec.rb
@@ -2,6 +2,7 @@
 require_relative '../context/card_context'
 require_relative '../../lib/mangopay/api/service/pre_authorizations'
 require_relative '../../lib/mangopay/model/enum/payment_status'
+require_relative '../../lib/mangopay/model/enum/avs_result'
 require_relative '../../lib/mangopay/common/sort_field'
 require_relative '../../lib/mangopay/common/sort_direction'
 
@@ -20,6 +21,7 @@
         expect(created).to be_kind_of MangoModel::PreAuthorization
         expect(created.id).not_to be_nil
         expect(created.payment_status).to be MangoModel::PaymentStatus::WAITING
+        expect(created.security_info.avs_result).to be MangoModel::AvsResult::FULL_MATCH
         expect(its_the_same_pre_auth(pre_auth, created)).to be_truthy
       end
     end