By Bradley Sayles and Amelia Lant (October 26, 2017, 12:41 PM EDT) -- Last week, the U.S. Department of Homeland Security issued a warning about a widespread vulnerability that exists in nearly all wireless networks.[1] Belgian researchers discovered that wireless networks encrypted using the Wi-Fi Protected Access-2 (WPA2) protocol were susceptible to Key Reinstallation AttaCKs (KRACK).[2] WPA2's vulnerability to KRACKs greatly expands on previous weaknesses in the protocol that were far more limited in scope and potential exposure.[3] The KRACK exploit permits an attacker who is physically within range of a wireless network to gain unencrypted access to information transmitted by devices connected to the network without requiring the attacker to first obtain the network's password or the encryption key itself....