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The secret US mission to bolster Ukraine’s cyber defenses ahead of Russia’s invasion

Enlarge (credit: gwengoat | Getty Images) Months before the Russian invasion, a team of Americans fanned out across Ukraine looking for a very specific kind of threat. Some team members were soldiers with the US Army’s Cyber Command. Others were civilian contractors and some employees of American companies that help defend critical infrastructure from the...

New method that amplifies DDoSes by 4 billion-fold. What could go wrong?
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New method that amplifies DDoSes by 4 billion-fold. What could go wrong?

Enlarge (credit: Getty Images) Cybercriminals who use giant floods of data to knock sites offline are leveraging a never-before-seen method that has the potential to increase the damaging effects of those floods by an unprecedented 4 billion times, researchers warned on Tuesday. Like many other types of distributed denial-of-service attacks, the attacks send a modest...

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Linux has been bitten by its most high-severity vulnerability in years

Enlarge (credit: Getty Images) Linux has yet another high-severity vulnerability that makes it easy for untrusted users to execute code capable of carrying out a host of malicious actions including installing backdoors, creating unauthorized user accounts, and modifying scripts or binaries used by privileged services or apps. Dirty Pipe, as the vulnerability has been named,...

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Attackers can force Amazon Echos to hack themselves with self-issued commands

Enlarge / A group of Amazon Echo smart speakers, including Echo Studio, Echo, and Echo Dot models. (Photo by Neil Godwin/Future Publishing via Getty Images) (credit: T3 Magazine/Getty Images) Academic researchers have devised a new working exploit that commandeers Amazon Echo smart speakers and forces them to unlock doors, make phone calls and unauthorized purchases,...