A new genomic technique has revealed ghost ancestry from two unknown human lineages hidden in modern DNA.
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Brain Waves Once Dismissed As Noise May Help Build Our Reality
Your brain may rely on sweeping waves of electrical activity to turn what your eyes see into a clear picture of the world.
Known as neural traveling waves, these electrical patterns move through brain tissue rather than remaining fixed in one location. By changing how responsive different groups of neurons are at a given moment, they may influence your attention, perception, and behavior.
In a review published in Neuron, Salk Institute neuroscientists argue that these waves are not merely background activity. Instead, they may function as a computational engine that helps the visual cortex create an internal model of the surrounding world. Similar processes could also operate in other parts of the brain.
Over 4,400 Rockwell PLCs Exposed Online, 22 Found in Water Attack Cities
Forescout found 22 internet-facing Rockwell Automation programmable logic controllers (PLCs) in cities hit by recent cyberattacks on US water utilities. Nineteen used the same mobile carrier network.
Its August 3 scan counted 4,407 exposed Rockwell controllers worldwide, including 2,844 in the United States, but Forescout could not confirm any were compromised. That figure counts exposed controllers, not water utilities or confirmed victims.
Forescout said the publicly described effects could be achieved without a vulnerability exploit: attackers changed IP addresses and set passwords on controllers that were already reachable, causing operators to lose visibility and, in some cases, control of connected equipment.
New TONTOU CPU attack bypasses Spectre v2 fixes, leaks Linux password hashes
Researchers found a way to bypass recent mitigations for Spectre v2 speculative execution side-channel attacks and developed an exploit to leak secrets from Linux machines.
The method works against Spectre v2 defenses on AMD and Intel processors that rely on sanitizing or isolating branch predictors, which researchers generically refer to as neutralization-based mitigations.
Spectre v2 is also known as Branch Target Injection (BTI) and is a variant of the Spectre class of vulnerabilities.