WhatsApp's Security Flaw Can Allow Hackers To Manipulate Your Messages

WhatsApp's Security Flaw Can Allow Hackers To Manipulate Your Messages”

WhatsApp has refused to fix a security flaw that allows hackers to spoof messages and make it look as if they are coming from someone else, nearly a year after a cybersecurity company warned that it could permit the spread of misinformation and fake news.

Check Point disclosed the flaws at the Black Hat 2019 security conference in Las Vegas, but it's worth noting that Facebook was notified sometime around the end of 2018, and has only managed to fix one of the three vulnerabilities - the one where you can be fooled into mixing public and private messages.

WhatsApp's "protobuf2 protocol" was converted to JSON to find out how the messages could be manipulated.

WhatsApp rejected the Check Point study saying the hacks were not a vulnerability with the security protocols of the instant messaging app.

According to the researchers, the vulnerability would enable threat actors to intercept and manipulate messages sent in private and also in the group.

In particular, the encryption technology used by WhatsApp made it extremely hard - perhaps impossible - for the company to monitor and verify the authenticity of messages being sent by users. This was done by reversing WhatsApp's decryption algorithm data. The scenario described here is merely the mobile equivalent of altering replies in an email thread to make it look like something a person didn't write. In June, WhatsApp was criticized as the source of fake news circulating around the India, Brazil, Kenya, and the UK.

The latest study reveals a complex but feasible method for hackers to conduct frauds through WhatsApp.

The first flaw looks to change how a message's sender is identified, allowing hackers to mis-attribute a message, with the second allowing third parties to change the text of a user's reply.

In a statement to IANS, a Facebook spokesperson said it reviewed the issue a year ago and found that it was "false to suggest there is a vulnerability with the security we provide on WhatsApp".

The Facebook-owned messaging app has more than 1.5 billion users and is used in 180 countries around the world; the average user checks the app 23 times a day. The vulnerability relies on the fact that a participant in the group can, of course, access the decrypted version of the messages.

"This does not mean that users should stop using WhatsApp".

"Yet, users should be very careful when contributing to group chats".

Rahul Tyagi, Co-founder, Lucideus said, "WhatsApp can prevent this by addressing the vulnerabilities and fixing them which WhatsApp denied the existence of".

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