Sweet32: Birthday attack on 64-bit block cipher - Withdrawal of 3DES cipher support for all Zoho services - 31/01/2017

Sweet32: Birthday attack on 64-bit block cipher - Withdrawal of 3DES cipher support for all Zoho services - 31/01/2017

Zoho always tries to provide utmost security and privacy to our users and here is one such instance. This is about removing weak and insecure ways to access our platform and strengthening it based on industry standard recommendations from time to time.


3DES,  a 64-bit block cipher,  is one of the algorithms used for encryption. These block ciphers, with short block size, are vulnerable to a type of  cryptographic attack, known as the Birthday Attack. Due to this vulnerability, all Zoho services will stop extending support to 3DES from January 31, 2017.


After Zoho disables 3DES cipher, any communication with a Zoho service will need to use AES (128/256) cipher for encryption. All modern browsers/clients and operating systems support robust algorithms like AES. In order to avoid issues connecting with Zoho services, we advice our users to stay up-to-date and update to such latest systems.


1) Internet Browsers:

We monitored our traffic and observed that around 98% of users connecting via 3DES are using IE on Windows XP or Windows 2003 server. These legacy systems do not support AES based ciphers by default. As these systems are no longer supported by its vendor, we  recommend our customers to upgrade their OS or at least use latest   browsers like Firefox/Chrome.

 

2) API Integrations:
If your APIs use 3DES cipher to access Zoho's Applications, please update your API to connect via AES(126,256). Refer the following to set the cipher suite for the language you are using:

 

Java     - Set the cipher suite in javax.net.ssl.SSLSocket.

Ruby    - Set the preferred cipher suite in OpenSSL::SSL::SSLContext

PHP     -  Set CURLOPT_SSL_CIPHER_LIST to a list cipher suites that uses AES for encryption to your Curl options.

Python - Set the cipher suite in SSLContext.set_ciphers.

c#        - Use CipherAlgorithmType AES.

 

You can also refer SSLLabs to check whether you will be affected by this measure. Do get in touch  with the respective Zoho product team in c ase you have any queries.
Take  these measures right away so that you are not affected by this attack.  To know more about the sweet32 vulnerability, refer : https://sweet32.info/


      • Sticky Posts

      • Thanksgiving 2022 - Celebrating Zoho Community SuperBuds

        One of the things we love most about our Zoho User Community is how readily our users help each other out, and share their Zoho and business knowledge. Be it the community forums, the virtual and in-person meetups, or Zoholics, it's been heart-warming

      • ZOHO-20 to fight COVID-19

        While the world economy is taking a hit, we, at Zoho, are doing our bit to help small businesses come out of this crisis. Here are all the programs and packages offered by Zoho to fight Covid-19. 1. ESAP: The Small Business Emergency Subscription Assistance Program (ESAP) gives our severely impacted small business customers access to Zoho software they currently use, free for three months. All Zoho customers with 25 employees or fewer who have been severely impacted by the coronavirus-related downturn

      • ​Issues with Forum posts approval in Zoho Community

        Hi All, Issue: Some of you have reported that the posts/comments made today are going for moderation. The issue started few hours ago, and the behaviour was reported in CRM and Creator Forums by a few customers/partners. We were able to see the same problem in a few other product forums too. How it impacts you: Don't worry if you find that your posts and comments are stuck in moderation. Your posts/comments are safe. Please don't duplicate them. We're keeping a tab on the development and approving

      • Severity high! Please change the URL of published forms.

        We are facing some issues with our domain zohopublic.com, as it has been blocked by our registrar. We are diligently working with them to resolve the issue. As an interim measure, we request you to use zohopublic1.com, instead. If you are using Zoho Creator or Zoho Forms, please edit the embed code and change the domain to creator.zohopublic1.com for Zoho Creator and forms.zohopublic1.com for Zoho Forms. If you are using Zoho Survey, you will have to re-send the survey link to the participants. We

        • Recent Topics

        • Create Lead Button in Zoho CRM Dashboard

          Right now to create Leads in the CRM our team is going into the Lead module, selecting the "Create Lead" button, then building out the lead. Is there anyway to add the "Create Lead" button or some sort of short cut to the Zoho CRM Dashboard to cut out

        • Searching customer field

          Hello, When entering a receipt, we select customer information. The customer information is synced with Zoho CRM. However, we can't find the customer information because it searches for words that begin with the entered value. It needs to search for words

        • Introducing Version-3 APIs - Explore New APIs & Enhancements

          Happy to announce the release of Version 3 (V3) APIs with an easy to use interface, new APIs, and more examples to help you understand and access the APIs better. V3 APIs can be accessed through our new link, where you can explore our complete documentation,

        • Outgoing blocked: Unusual activity detected.

          Hello i can't send email from g.morris@adm-part.com mail, can you please help me.

        • Zoho CRM Tracking Google Enhanced Conversions

          Can anyone @Zoho, consultants, or users help me understand if Zoho CRM is going to support Google's Enhanced Conversions? I included some information from Google below about it. We use Google Adwords for our pay per click advertising for lead generation,

        • zoho click, and nord VPN

          Unfortunately, we've been having problems with Zoho Click, where essentially the line cuts off after about a minute's worth of conversation every time we are on VPN. Is there a way we can change this within the settings so it does not cut the line off

        • Connecting Portals from different Zoho apps

          Hi, I note that Zoho has functionality for customer portals for several of the Zoho apps, like CRM, Projects, Desk etc. Is there any way to connect these portals?  It would be great if we could give our customers access to a portal in which they could

        • Billing Management: #5 Usage Billing

          After understanding the nuances of Advance Billing and Retainers, we will explore one of the booming billing models. Long ago, villagers drew water from a shared well in a small village. The well was a lifeline for the entire community. Ravi, the well

        • Function #10: Update item prices automatically based on the last transaction created

          In businesses, item prices are not always fixed and can fluctuate due to various factors. If you find yourself manually adjusting the item rates every time they change, we have the ideal time-saving solution for you. In today's post, we bring you custom

        • Inventory Adjustments

          Hi, How to transfer the material from one head to another ? Like materials purchased for manufacturing the laptop need to transfer from consumption inventory (Quantity of raw materials reduced) to destination inventory ( Quantity of Laptop increased)

        • Zoho CRM Community Digest - August 2025 | Part 1

          Hey everyone! The first half of August went by, and we have a few announcements and some good noteworthy discussions. So, let's take a look at them! Product Updates: Introducing Connected Records feature: Zoho CRM’s Next-Gen UI now includes Connected

        • Please make it easier to Pause syncing

          right now it takes 3 clicks to get there. sounds silly, but can you make it just 2 clicks to get it done instead? thats how dropbox does it, 2 clicks to pause instead of 3.

        • How to create a Zoho CRM report with 2 child modules

          Hi all, Is it possible to create a Zoho CRM report or chart with 2 child modules? After I add the first child module, the + button only adds another parent module. It won't let me add multiple child modules at once. We don't have Zoho Analytics and would

        • SalesIQとPageSenseの利用について

          初めての投稿で場違いだったらすいません。 弊社ではSalesIQを運用しているのですが、追加でPageSenseの導入もしたいと現場からの声があります。 両サービスともクッキー同意バナーが必要なサービスなのですが 弊社では同意無しに情報はとりませんという方針なので 2つ入れると2つバナーを出す必要がでてきます・・・ 両サービスを運用されてる方があれば運用状況とか教えてほしいです。 PageSenseについては詳細まで機能を理解してないなかでの質問です。

        • How to integrate Zoho Forms with Zoho CRM on Standard Plan

          Hello Zoho Support Team, I am using the Standard Zoho Forms plan (USD 30/user) and I would like to integrate Zoho Forms with Zoho CRM so that certain fields in my forms can be automatically prefilled using data from Deals in CRM. Specifically, I want

        • Export PDF File Name

          Is it possible to change the default Zoho .pdf naming scheme for inventory items like quotations? Would like to use the the Subject as the default quote name. Is this possible?

        • How to change the from address from 'no reply' for an email template in CRM

          Hi, We have our CRM set up with the from field as sales@XXX. I have just created a series of email templates and sent a test and they are sending from noreply@zoho I have tried searching for how to change the email template but don't have the options

        • Zoho CRM Client Script - SetCriteria in lookup Field

          Hello All One More Zoho CRM Client Script Tips & Trick. Now you can Set the Criteria on Your lookup in zoho CRM, It Comes With a Create Page, Edit Page, and Details Page (Standard). Example:- We have a Room Module that includes Room Name, Status, Campus,

        • Kaizen #71 - Client Script ZDKs for Detail (Canvas) Page

          Hello everyone! Welcome back to another interesting Kaizen post. In this post, we can discuss Client Script ZDKs support for Detail (Canvas) Page. What is Detail (Canvas) Page? A Detail(Canvas) Page allows you to customize the record detail page to your

        • Zoho Reports Duplicating Entries

          I have a custom costing tab with a table where we entre invoices. These are under a Heading (PO Subject) and notes added in the form with different line items. In the reports, I have organised the report to group per PO Subject, with the total of the

        • Validation Rule Not Working for Mandatory Field in Zoho Blueprint

          As a Zoho user, we created a validation rule for a specific field. However, we noticed that when we made the same field mandatory within a Blueprint, the validation rule we defined did not work. When we reported this issue to Zoho Support, they stated

        • Notes Issues

          Been having issues with Notes in the CRM. Yesterday it wasn't showing the notes, but it got resolved after a few minutes., Now I have been having a hard time saving notes the whole day. Notes can't be saved by the save button. it's grayed out or not grayed

        • Export from Contacts module to Products module in Zoho CRM

          Good afternoon, I would like to send a number of contact info from the Contacts module into the customized module (tickets to an event) in one operation. I have selected several contacts in the Contact module (people who I have labelled as people I want

        • Can’t receive emailI c

          I have generated a basic for but when I submit it I don’t get a email, I’ve been in the settings and tested me email, all appears correct, can you please help me

        • Data Capture for Historical Activity (Especially One Lead Downloading Variois reports without Overwriting the info)

          Is there a better way in Zoho CRM to capture and archive a lead’s historical activity—specifically whenever they download reports—so that the data is stored without being overwritten?”

        • Client Script - Updating Field Value in Detail Page of a Lead

          Hello, I'm trying to use Client Script To enrich some data of the Lead when one of my User fill the "City" field in the detail page of the Lead. This is my Script: log (value); var response = ZDK.Apps.CRM.Functions.execute("getInfoCitta", { "nomeCitta":

        • Auto shapes in Zoho sheet.

          Does Zoho sheet supports inserting auto shapes (rectangle, circle...). I did not see any option to do so.  If its not supported currently, is there any plans on bring in this features. Any timelines ?

        • How to get the call recording external ID via desk API

          I have enabled phonbridge integration with Zoom Call. I am trying to access the call recording in Zoom by calling Zoom API. I have built a Desk workflow to trigger on a new call, to call a custom function. when calling the API, the response doesn't contain

        • Can't View Project Names in Mobile App

          I can't view project names on PO's in the app, nor can I add that as a viewable PDF field in inventory on the computer. I've attached screenshots showing that in the mobile version whether you are on the PO, editing the PO, or viewing the PO line items,

        • Notebook

          I have purchased the monthly pro subscription of Notebook. But it does not support my XP-Pen to write something in it. So it is not useful to me. Hence I am requesting you to help me to discontinue this subscription.

        • Domain Mapping & Image Publishing Issues on Zoho Sites

          Hello, I am facing two issues with my Zoho Sites account: 1. Images not visible after publishing. 2. Domain mapping error: "Domain already exists". I am a paid customer. Please connect me with Live Chat Support or Zoho Assist so I can show my issue

        • Prevent duplicate with custom fields?

          I was wondering something about custom field/custom modules in Zoho Desk. For some reason you can make a custom field mandatory but not unique? For example, if I create a custom module to manage equipment and renewal and make a field serial number no

        • Generate leads from instagram

          hello i have question. If connect instagram using zoho social, it is possible to get lead from instagram? example if someone send me direct message or comment on my post and then they generate to lead

        • Where is the desktop app for Zoho Projects???

          As a project manager, I need a desktop app for the projects I manage. Yes, there's the web app, which is AWESOME for cross browser and platform compatibility... but I need a real desktop app for Projects that allow me to enter offline information where

        • How to Automate Monthly PDF Reports with Filters in Zoho Creator

          Hi everyone, I’m trying to build an automated monthly reporting process in Zoho Creator and would appreciate suggestions or best practices from anyone who has done something similar. What I’m trying to do: I have a form called New_Customer with fields

        • Feedback: Streamlining Note Management in Zoho Notebook

          Dear Team/Support, I would like to share some feedback regarding the note management system that could help improve usability and accessibility for users like myself. Notebook 1 (screenshot attached): Currently, the system does not allow selecting and

        • showing Limit exceeded

          Good afternoon...trust you're good. I've been having issues working with but it's not responding. it's showing Limit exceeded, sorry it seems like too many people are working on the sheet right now please try again later. meanwhile no one is working on

        • Upload API

          I'm trying to use the Upload API to upload some images and attach them to comments (https://desk.zoho.com/DeskAPIDocument#Uploads#Uploads_Uploadfile) - however I can only ever get a 401 or bad request back. I'm using an OAuth token with the Desk.tickets.ALL

        • Losing description after merging tickets

          Hello, We merge tickets when they are about the same topic from the same client. It happens sometimes. We recently noticed that after the merger only the description from the master ticket is left in a thread. And the slave-ticket description is erased.

        • update linked contacts when update happens in account

          Hi, I have a custom field called Licence in the Accounts module. When someone buys a licence, I’d like to update a custom field in the related Contacts. How can I achieve this? I noticed that workflows triggered on Accounts only allow me to update fields

        • Next Page