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WhatsApp Group chats can easily be infiltrated: Researchers

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San Francisco, Jan 11 (IANS) A team of German cryptographers has discovered flaws in WhatsApp’s Group chats despite its end-to-end encryption, that makes it possible to infiltrate private group chats without admin permission.

According to a report in Wired.com, the cryptographers from Ruhr University Bochum in Germany announced this at the “Real World Crypto Security Conference in Zurich, Switzerland, on Wednesday.

“Anyone who controls the app’s servers could insert new people into private group chats without needing admin permission,” the report said, citing cryptographers.

“The confidentiality of the group is broken as soon as the uninvited member can obtain all the new messages and read them,” Paul Rosler, one of the Ruhr University researchers, was quoted as saying.

The WhatsApp attack on group chats takes advantage of a bug.

“Only an administrator of a WhatsApp group can invite new members, but WhatsApp doesn’t use any authentication mechanism for that invitation that its own servers can’t spoof,” the report said.

So the server can simply add a new member to a group with no interaction on the part of the administrator.

“The phone of every participant in the group then automatically shares secret keys with that new member, giving him or her full access to any future messages,” the report added.

With over 1.2 billion monthly active users, WhatsApp is available in more than 50 different languages around the world and in 10 Indian languages.

Facebook-owned WhatsApp added end-to-end encryption to every conversation two years ago.

According to the researchers, once an attacker with control of the WhatsApp server had access to the conversation, he or she could also use the server to selectively block any messages in the group.

“He can cache all the message and then decide which get sent to whom and which not,” Rosler said.

A WhatsApp spokesperson confirmed the findings to Wired, however adding that “no one can secretly add a new member to a group and a notification does go through that a new, unknown member has joined the group”.

“We’ve looked at this issue carefully,” the spokesperson added.

WhatsApp is likely to give group administrators more powers where they will be able to restrict all other members from sending text messages, photographs, videos, GIFs, documents or voice messages in case the admin thinks so.

According to WABetaInfo, a fan site that tests new WhatsApp features early, the popular mobile messaging platform has submitted the “Restricted Groups” setting via Google Play Beta Programme in the version 2.17.430.

Once restricted, other members will simply have to read their messages and will not be able to respond. They will have to use the “Message Admin” button to post a message or share media to the group.

–IANS
na/pgh/

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Apple is giving a huge discount on its gadgets: Details inside

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If you want to buy an iPhone and were waiting for a nice offer, then we have a piece of good news for you! Amazon Summer Sale May 2022 has begun and they are offering major discounts on various smartphones, laptops, and smart TVs, among others.

The sale is live now on the e-commerce platform with no-cost EMI options and exchange discounts on various products. In addition to this, Amazon has also partnered with several banks including ICICI, Kotak Bank, and RBL so that customers get instant discounts of up to 10% using their cards and EMI transactions.

Customers can easily enjoy this summer sale and get massive discounts on iPhones. They can also compare prices on Flipkart Big Saving Days Sale 2022 before making a purchase.

 

Amazon Summer Sale May 2022: Discount offer on iPhone 13 

Apple’s coveted phone model iPhone 13 in the 128 GB storage model will be available during the Amazon Summer Sale May 2022 for Rs 64,900. The MRP of the phone is Rs 79,900. This means that the customers will be able to enjoy a discount of up to Rs 15,000 on the purchase of the iPhone 13.

If you have an old iPhone in working condition then you will also be eligible to receive another additional discount worth up to Rs 17,000 on the iPhone 13.

Buy at Rs. 64,900 (MRP – Rs. 79,900)

Features of Apple iPhone 13 

The iPhone is powered by an A15 Bionic processor with 6 core CPU. Apart from this, it has 16 core neural engines. With the iPhone 13, up to 512 GB of storage will be available. The iPhone 13 has a 6.1-inch Retina XDR display with 1000 nits brightness.

The iPhone 13 has a 12-megapixel dual rear camera setup. This time a new wide-angle camera has been given, whose aperture is f/1.6. With this, there is support for sensor optical stabilisation. Night mode has been made better than before. The second lens is also 12 megapixels ultra-wide and has an aperture of f/2.4.

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