I am a professional ICT personnel, Chief System Analyst, blogger, Managing Director/Chief Executive Officer at Gatmond Internationals inc. and Country Director at Wake Up For Your Right Internationals USA (Nigeria Branch).
Friday, 20 October 2017
Warning! A majority of Wi-Fi connections have been hacked
This is due to a severe flaw in WPA2 protocol, and the proof-of-concept exploit is called KRACK (Key Reinstallation Attacks). It allows hackers to eavesdrop on any Wi-Fi traffic passing between computers and access points.
The US-CERT has recently distributed an advisory to about 100 organizations, warning that the discovered weakness can allow an attacker to decrypt network traffic from a WPA2-enabled device and hijack connections.
Depending on the network configuration, it is also possible hackers could inject and manipulate data.
The attack works by exploiting a four-way handshake used to establish a key for traffic encryption. During the third step of the process, the supposedly unique key can be resent multiple times. If a hacker can get it resent in a certain way, they can reuse it in a manner that completely undermines the encryption.
“Past experience shows that these types of vulnerabilities don’t get easily fixed,” said Marty Kamden, CMO of NordVPN.
“Home Wi-Fi users are especially vulnerable, as they do not have enough information how to deal with the threat.
ISPs can take years to switch to routers with a safer protocol. That’s another situation where users should take their Internet security into their own hands.
Everyone should assume that their network is now vulnerable, and take precautions. Virtual Private Networks – VPNs – remain the strongest defense form these types of vulnerabilities.”
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