As the security methods of sites and web applications evolve, the methods to steal information through these platforms are increasingly innovative. Specially in WhatsAppWhere suspicious links and chains constantly threaten the privacy of their users, the least cautious people are the most affected.

According to Fayer Wayer, the Israeli spy firm NSO Group developed a method to hack information from WhatsApp on certain smartphones just by receiving a call; It does not need to be answered and they do not even leave a trace in the telephone record.

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The vulnerability was discovered by the messaging network in May, releasing a protective patch this week. After talking to a number of human rights groups, he pointed to “a private company known for working with governments to deliver spy viruses.”

NSO denied any allegation.

Photo taken from freepik

HOW DID THE SAFETY FAILURE OF WHATSAPP?

WhatsApp He did not explain how he discovered the flaw, but the Facebook-owned company says it continues to take precautions. It is hoped that with the updates made this week, their clients will not be subject to spyware.

According to Karsten Nohl, chief scientist at the German company Security Research Labs, “there may be remotely exploitable errors.”

Photo taken from freepik

Wired spoke to Nohl, who explained that the origin may lie in the use of voice over Internet protocol to connect users.

VoIP applications must recognize incoming calls and notify them, even if the user does not answer, says Nohl. “In the case of WhatsApp, the protocol for establishing a connection is quite complex. So there is definitely room for exploitable errors that can be triggered without user response. “

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Facebook considers the vulnerability of WhatsApp it was derived from a common type of error known as buffer overflow. A class of attacks strategically overloads the buffer, overflowing data elsewhere in memory.

It’s a weird incident, but it’s not too rare these days, explains CryptoPhone’s Wired Bjoern Rupp. Security was never the initial objective of WhatsApp, so it has several vulnerabilities.

(Aline Núñez)