At the beginning of 2022, it was revealed that San Diego–based startup Boldend had developed tools to hack WhatsApp’s encryption, gaining access to user data, at some point since the startup’s inception in 2017. This new encryption feature added an additional layer of protection to chat backups stored either on Apple iCloud or Google Drive. The enforcement of the privacy policy was postponed from February 8 to May 15, 2021, WhatsApp announced they had no plans to limit the functionality of the app for those who did not approve the new daman game online terms.

Meta Quest

In 2023, WhatsApp replaced the Electron-based apps with native versions for their respective platforms. Similar to the WhatsApp Web format, the app, which synchronises with a user’s mobile device, is available for download on the website. Previously the WhatsApp user’s handset had to be connected to the Internet for the browser application to function but as of an update in October 2021 (and integrated by default in WhatsApp as of April 2022) that is no longer the case. Linked devices allow the service to be used on multiple other platforms like desktop computers and smartwatches (e.g. WhatsApp Web, Facebook Portal), but also on other smartphones (called companions). They link to and sync with WhatsApp actively running on a supported primary phone.

WhatsApp Messenger

WhatsApp was initially criticized for its lack of encryption, sending information as plaintext. Researchers and journalists called on WhatsApp’s parent company, Facebook, to adopt measures similar to those adopted in India and restrict the spread of hoaxes and fake news. It was reported that US$3 million was spent in illegal concealed contributions related to this practice. After financial regulators in many regions raised concerns, Facebook stated that the currency, renamed Diem since December 2020, would require a government-issued ID for verification, and the wallet app would have fraud protection.

Apps

The application can store encrypted copies of the chat messages onto the SD card, but chat messages are also stored unencrypted in the SQLite database file “msgstore.db”. WhatsApp confirmed the partnership to reporters, but there was no announcement or documentation about the encryption feature on the official website, and further requests for comment were declined. Open Whisper Systems said that they had already incorporated the protocol into the latest WhatsApp client for Android, and that support for other clients, group/media messages, and key verification would be coming soon after. On November 18, 2014, Open Whisper Systems announced a partnership with WhatsApp to provide end-to-end encryption by incorporating the encryption protocol used in Signal into each WhatsApp client platform. In February 2015, WhatsApp implemented voice calling, which helped WhatsApp to attract a different segment of the user population.

Multimedia messages are sent by uploading the image, audio or video to be sent to an HTTP server and then sending a link to the content along with its Base64 encoded thumbnail, if applicable. On November 14, 2016, WhatsApp added video calling for users using Android, iPhone, and Windows Phone devices. WhatsApp automatically compares all the phone numbers from the device’s address book with its central database of WhatsApp users to automatically add contacts to the user’s WhatsApp contact list. The desktop version was first only available to Android, BlackBerry, and Windows Phone users. WhatsApp Web is accessed through web.whatsapp.com and access is granted after the user scans their personal QR code through their mobile WhatsApp client.

In March 2019, WhatsApp released a guide for users who had installed unofficial modified versions of WhatsApp and warned that it may ban those using unofficial clients. In September 2022, a critical security issue in WhatsApp’s Android video call feature was reported. This is reportedly not an isolated occurrence, as federal agencies can use the Electronic Communications Privacy Act to covertly track users without submitting any probable cause or linking a user’s number to their identity. The app collected data on who the users contacted and how often, and when and how they were using the app.

India

By early January 2015, WhatsApp had 700 million monthly users and over 30 billion messages every day. Days after the announcement, WhatsApp users experienced a loss of service, leading to anger across social media. Some time in 2013 WhatsApp acquired Santa Clara–based startup SkyMobius, the developers of Vtok, a video and voice calling app. By February 2013, WhatsApp had about 200 million active users and 50 staff members. To cover the cost of sending verification texts to users, WhatsApp was changed from a free service to a paid one.

This ability (named multi-device support) began testing in July 2021 and rolled out to all users in April 2023. In September 2024, WhatsApp expanded support for Meta AI, allowing users to send text and photos to Meta AI to ask questions, identify objects, translate text or edit pictures. In June 2023, a feature called WhatsApp Channels was launched which allows content creators, public figures and organizations to send newsletter-like broadcasts to large numbers of users. Now, the feature is also made available to iOS users, allowing them to link up to four iPhones. Messages would still be end-to-end encrypted.WhatsApp officially rolled out the Companion mode for Android users, allowing linking up to five Android phones to a single account.

  • WhatsApp is owned by Meta, whose main social media service Facebook has been blocked in China since 2009.
  • The hack, allegedly developed by Israeli surveillance technology firm NSO Group, injected malware onto WhatsApp users’ phones via a remote-exploit bug in the app’s Voice over IP calling functions.
  • WhatsApp has increasingly drawn its innovation from competing services, such as a Telegram-inspired web version and features for groups.
  • On August 24, 2014, Koum announced on his Twitter account that WhatsApp had over 600 million active users worldwide.
  • They link to and sync with WhatsApp actively running on a supported primary phone.

Previously the Android and Nokia Series 40 versions used an MD5-hashed, reversed-version of the phone’s IMEI as a password, while the iOS version used the phone’s Wi-Fi MAC address instead of the IMEI. WhatsApp uses a customized version of the open standard Extensible messaging and presence protocol (XMPP). In July 2025, WhatsApp stopped developing the Windows UWP-based app due to poor support and deprecation of the UWP framework by Microsoft.

  • On April 5, 2016, WhatsApp and Open Whisper Systems announced that they had finished adding end-to-end encryption to “every form of communication” on WhatsApp, and that users could now verify each other’s keys.
  • The app collected data on who the users contacted and how often, and when and how they were using the app.
  • Local users can text special numbers in the app to launch an in-app shopping process, where they can order groceries.
  • In September 2022, a critical security issue in WhatsApp’s Android video call feature was reported.

Engadget called the revamped feature “WhatsApp’s version of an AIM away message” and likened it to Instagram’s and Facebook’s Notes. Prior to the update, the feature was “largely hidden within the apps menus” and difficult to find, with the reason for updating being that WhatsApp wanted the feature to be used more often. According to WhatsApp, this update was made for the incoming Christmas period for users to inform their contacts on their activities during the holidays. WhatsApp also introduced chat filters, allowing users to sort their chats by All, Unread or Groups. In April 2024, an AI-powered “Smart Assistant” became widely available in WhatsApp, allowing users to ask it questions or have it complete tasks such as generating images. Channels were initially only available to users in Colombia and Singapore, then later Egypt, Chile, Malaysia, Morocco, Ukraine, Kenya and Peru before becoming widely available in September 2023.

In 2022, WhatsApp added the ability for users to turn off their online status. In August 2022, WhatsApp launched an integration with JioMart, available only to users in India. The Cloud API enables businesses to integrate WhatsApp with other software, have a central WhatsApp account for multiple users and implement advanced automation. In January 2021, WhatsApp announced a controversial new privacy policy allowing WhatsApp to share data with its parent company, Facebook. In April 2018, WhatsApp co-founder and CEO Jan Koum announced he would be leaving the company.

This “Facebook coin” would reportedly be a stablecoin pegged to the value of a basket of different foreign currencies. The project reportedly involved more than 50 engineers under the direction of former PayPal president David A. Marcus. On February 28, 2019, The New York Times reported that Facebook was “hoping to succeed where Bitcoin failed” by developing an in-house cryptocurrency that would be incorporated into WhatsApp. The service became generally available in India and Brazil, and in Singapore for WhatsApp Business transactions only.

In September 2017, security researchers reported to The New York Times that the WhatsApp service had been completely blocked in China. Another application called GB WhatsApp is considered malicious by cybersecurity firm Symantec because it usually performs some unauthorized operations on end-user devices. The message reportedly contained a malicious file, the receipt of which resulted in Bezos’ phone being hacked. According to WhatsApp, the exploit “targeted at least 100 human-rights defenders, journalists and other members of civil society” among a total of 1,400 users in 20 countries. A Wired report noted the attack was able to inject malware via calls to the targeted phone, even if the user did not answer the call. In 2018, it was reported that around 500,000 National Health Service (NHS) staff used WhatsApp and other instant messaging systems at work and around 29,000 had faced disciplinary action for doing so.

Voice and video calling and notes

In May 2017, it was reported that WhatsApp users spend over 340 million minutes on video calls each day on the app. In May 2016, some WhatsApp users were reported to have been tricked into downloading a third-party application called WhatsApp Gold, which was part of a scam that infected the users’ phones with malware. Since the complete roll out of this feature, users cannot check old messages before this period on the Web version anymore.

(The word “telegram” appeared in WhatsApp’s code.) Some considered it an anti-competitive measure; WhatsApp offered no explanation. He also said that new mobile phones would be sold in Germany with the WhatsApp brand, and that their ultimate goal was to be on all smartphones. Three days after announcing the Facebook purchase, Koum said they were working to introduce voice calls. Sequoia Capital received an approximate 5,000% return on its initial investment. At the time, it was the largest acquisition of a venture-capital-backed company in history. On February 19, 2014, one year after the venture capital financing round at a $1.5 billion valuation, Facebook, Inc. (now Meta Platforms) agreed to acquire the company for US$19 billion, its largest acquisition to date.

In May 2019, WhatsApp was attacked by hackers who installed spyware on a number of victims’ smartphones. Higher usage was reported by frontline clinical staff to keep up with care needs, even though NHS trust policies do not permit their use. Further, the Cabinet Office had claimed that since many messages were not relevant to the inquiry, it only needed to hand over material it had selected as being relevant. A personal device of the former Prime Minister, Boris Johnson, had been compromised by a security breach, and it was claimed that it could not be switched on to recover messages. The researchers notified, Meta (who updated the enumeration problem in October), and deleted their copy of the phone numbers. On November 29, 2021, an FBI document was uncovered by Rolling Stone, revealing that WhatsApp responds to warrants and subpoenas from law enforcement within minutes, providing user metadata to the authorities.

In April 2022, WhatsApp announced undated plans to roll out a Communities feature allowing several group chats to exist in a shared space, getting unified notifications and opening up smaller discussion groups. It was also not available for iOS users on launch, due to limitations from Apple. The web client was not standalone, and required the user’s phone to stay on and connected to the internet. In a later update on November 30, WhatsApp added a Secret Code feature, which allows those who use locked chats to enter a unique password that hides those chats from view when unlocking the app. In October 2023 they also introduced passkey support, where a user can verify their login with on-device biometrics, rather than SMS.

Both airlines had previously launched customer services on the Facebook Messenger platform. WhatsApp also announced a forthcoming business platform to enable companies to provide customer service at scale, and airlines KLM and Aeroméxico announced their participation in the testing. He also said that the app would not display any third-party ads, and that it would have new features such as the ability to communicate with businesses. In April 2015, Forbes predicted that between 2012 and 2018, the telecommunications industry would lose $386 billion because of “over-the-top” services like WhatsApp and Skype.

Store support and legal

In April 2017, nearly 300 WhatsApp groups with about 250 members each were reportedly being used to mobilize stone-pelters in Jammu and Kashmir to disrupt security forces’ operations at encounter sites. The messages involved discussing how to make an explosive device and a confession to the attack. In December 2015, it was reported that terrorist organization ISIS had been using WhatsApp to plot the November 2015 Paris attacks. In its revelation via documents received via court, the group claimed that the lawsuit brought against the company by WhatsApp threatened to infringe on its clients’ “national security and foreign policy concerns”.

Previously, users could opt-out of such data sharing, but the new policy removed this option. In January 2021, WhatsApp announced an updated privacy policy which stated that WhatsApp would share user data with Facebook and its “family of companies” beginning February 2021. When a user deletes media for everyone, WhatsApp does not delete images saved in the iOS camera roll and so those users are able to keep the images. WhatsApp was criticized by security researchers and the Electronic Frontier Foundation for using backups that are not covered by end-to-end encryption and allow messages to be accessed by third-parties. In November 2020, UPI payments via WhatsApp were initially restricted to 20 million users, and to 100 million users in April 2022, and became generally available to everyone in August 2022.