KRACK (Key Reinstallation Attack)
KRACK, which stands for Key Reinstallation Attack, is a cybersecurity issue that affects Wi-Fi networks. To understand the attack, you need to know how Wi-Fi secure connections work. Wi-Fi networks protect data from hackers by using a protocol called WPA2. This protocol encrypts Wi-Fi data and secures it with a key.
A KRACK attack targets the WPA2 protocol. During a KRACK attack, a hacker can intercept and manipulate the WPA2 key exchange process. This process is how a device connects to a Wi-Fi network securely. By manipulating the key exchange process, a hacker can gain access to the Wi-Fi network and steal sensitive information.
In simpler terms, let’s say you have a lock on your diary that only you have the key for. Someone who wants to read your diary would have to break the lock to get inside. A KRACK attack is like someone getting a copy of your key without you knowing. They can use the key to get inside your diary without leaving any evidence of forced entry.
KRACK is a serious issue because it can affect almost any device that uses Wi-Fi, including smartphones, laptops, and smart home devices. It is important to keep your devices up-to-date with the latest security patches as they become available to protect against KRACK attacks.