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Google launches unified initiative to boost open source security reporting

Google launches unified initiative to boost open source security reporting
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New Exploit Breaks Current Spectre Defenses; Fixes Hard Without Performance Impact


New Exploit Breaks Current Spectre Defenses; Fixes Hard without Performance Impact
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Researchers from the University of Virginia School of Engineering recently disclosed a new Spectre hardware exploit that can steal secrets via Intel/AMD micro-op caches and circumvents current Spectre defenses. Intel and AMD say no new guidance is needed. Researchers say suggested fixes are inconvenient to deploy or have performance drawbacks.
Ashish Venkat, William Wulf career enhancement assistant professor of computer science at UVA Engineering, explained the exploit in layman terms:
Think about a hypothetical airport security scenario where TSA lets you in without checking your boarding pass because (1) it is fast and efficient, and (2) you will be checked for your boarding pass at the gate anyway. ....

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Spectre attacks against websites still a serious threat, Google warns


Browser-maker urges web developers to take action against vulnerability that continues to haunt the industry
UPDATED Three years after the infamous Spectre vulnerability was discovered, hackers can still exploit the security flaw in order to force web browsers to leak information, Google’s security team warns.
The problem has arisen despite extensive efforts by browser developers to harden their software against Spectre-style attacks.
The results of the research was published on the Google Security Blog on Friday (March 12) and include a proof-of-concept exploit written in JavaScript that still works against several browsers, operating systems, and processors.
The key lesson from the research is that Spectre still haunts the industry – so developers need to deploy application-level mitigation measures in order to guard against potential attacks. ....

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