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Researchers Reveal Vulnerabilities that Allowed Hackers to Manipulate Images on WhatsApp and Telegram

WhatsApp saves files to external storage automatically, while Telegram does so when the "Save to Gallery" feature is enabled

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Hackers, Images, Whatsapp
The security flaw, dubbed "Media File Jacking", affected WhatsApp for Android by default. Pixabay

If you thought instant messaging platforms like WhatsApp and Telegram that provide end-to-end encryption give you rock-solid security, think again. Researchers from cyber-security firm Symantec on Monday revealed vulnerabilities that allowed hackers to manipulate the images and audio files you receive on these platforms.

The security flaw, dubbed “Media File Jacking”, affected WhatsApp for Android by default, and Telegram for Android if certain features were enabled, Symantec researchers said in a blog post.

According to the researchers, WhatsApp saves files to external storage automatically, while Telegram does so when the “Save to Gallery” feature is enabled. However, neither apps have any system in place to protect users from a Media File Jacking attack, the researchers from Symantec’s Modern OS Security team explained.

Attackers could exploit this vulnerability to scam victims in various ways.

Hackers, Images, Whatsapp
If you thought instant messaging platforms like WhatsApp and Telegram that provide end-to-end encryption give you rock-solid security, think again. Pixabay

“If the security flaw is exploited, a malicious attacker could misuse and manipulate sensitive information such as personal photos and videos, corporate documents, invoices, and voice memos,” wrote Software Engineer Alon Gat and Yair Amit, Vice-President and Chief Technology Officer, Modern OS Security, Symantec.

Giving example of image manipulation, the researchers said a seemingly innocent, but actually malicious, app downloaded by a user could manipulate personal photos in near-real time and without the victim knowing.

The app runs in the background and performs a “Media File Jacking attack” while the victim uses WhatsApp. It monitors for photos received through the app, identifies faces in photos, and replaces them with something else, such as other faces or objects.

“A WhatsApp user may send a family photo to one of their contacts, but what the recipient sees is actually a modified photo. While this attack may seem trivial and just a nuisance, it shows the feasibility of manipulating images on the fly,” said the blog post.

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Using the same vulnerability, the attackers could make payment manipulation, audio message spoofing or spread fake news.

“In one of the most damaging Media File Jacking attacks, a malicious actor can manipulate an invoice sent by a vendor to a customer, to trick the customer into making a payment to an illegitimate account,” Gat and Amit wrote.

“The Media File Jacking threat is especially concerning in light of the common perception that the new generation of IM (instant messaging) apps are immune to content manipulation and privacy risks, thanks to the utilisation of security mechanisms like end-to-end encryption,” they added.

Hackers, Images, Whatsapp
Researchers from cyber-security firm Symantec on Monday revealed vulnerabilities that allowed hackers to manipulate the images and audio files. Pixabay

Reports in May revealed that a bug in WhatsApp’s audio call feature allowed hackers to install spyware onto Android and iOS phones just by calling the target. The spyware was reportedly developed by the Israeli cyber intelligence company NSO Group.

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WhatsApp had said it identified and “promptly” fixed the vulnerability that could enable an attacker to insert and execute code on mobile devices. (IANS)

Next Story

Dark Mode on WhatsApp to Make a Debut Soon For iOS

The iPhone users will be able to run this feature on iOS 13 and the icons in dark mode are in blue and grey colour schemes

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Dark Mode
Apart from Dark Mode, WhatsApp is also testing a new beta update for iOS users which would bring features like hide muted status update, splash screen and app badge improvements, among others. Pixabay

Dark Mode for WhatsApp has been in the news for long but the feature may debut sooner on the messasing app starting with the iOS users.

The iPhone users will be able to run this feature on iOS 13 and the icons in dark mode are in blue and grey colour schemes, according to WABetaInfo, a fan website that tracks WhatsApp updates.

Additionally, WhatsApp is also testing a new beta update for iOS users which would bring features like hide muted status update, splash screen and app badge improvements, among others.

WhatsApp’s new splash screen would essentially let users see the WhatsApp logo whenever they open the app on their iPhones. This is also available on the Android beta app.

Dark Mode
Dark Mode for WhatsApp has been in the news for long but the feature may debut sooner on the messasing app starting with the iOS users. Pixabay

Last week, WhatsApp has added a new privacy setting, which will let users decide whether they want to join a group on the messaging platform or not.

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To enable it, users need to go to “Settings” in the app, then tap Account, Privacy and Groups and select one of three options: “Everyone,” “My Contacts,” or “My Contacts Except.” (IANS)