MITM

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  • Companies could use 'intermediate' web security certificates to spy

    by 
    Mat Smith
    Mat Smith
    05.26.2016

    A certificate authority (CA) is a trusted entity that issues electronic certificates (duh) to verify identity on the Internet. They're a key part of secure communications online -- and thus super important. Then there's intermediate CAs, signed by a root CA, making certificates for any website. However, they're just as powerful as those root ones. Worse still, there's no full list for the ones your system trusts because root CAs can make new ones whenever it wants, and our computers will trust 'em immediately. This is a problem when companies get their hands on them, although they could have legitimate reasons for using an intermediate CA within their own networks.

  • How could Lenovo miss its Superfish security hole?

    by 
    Richard Lawler
    Richard Lawler
    02.20.2015

    Until mid-day yesterday Lenovo thought the biggest problem with Superfish VisualDiscovery was the annoying ads it caused to pop up on customers' laptops. SuperFish was supposed to analyze images on the web and "help" consumers find similar products, but the information security world was learning that it (apparently unintentionally) does quite a bit more. Facebook engineer Mike Shaver tweeted Wednesday night about how the preloaded adware performs a man-in-the-middle (MITM) attack on supposedly secure connections, and by Thursday morning security researcher Rob Graham showed how it could be used to spy on the encrypted communications of anyone running the software. At that point, Levono CTO Peter Hortensius still referred to resulting security problems as "thoretical" but moves today from Microsoft and the US government -- and his comments to us -- show that they've realized the threat is very real. Update: Lenovo has just released a Superfish removal tool. In an accompanying statement (included after the break), the company says it's also working with McAfee so that virus scanners will remove the software and its certificate.

  • New Lenovo PCs shipped with factory-installed adware

    by 
    Timothy J. Seppala
    Timothy J. Seppala
    02.19.2015

    Buy a new Lenovo computer recently? Well, it looks like it could be infected with some factory-installed adware. Users on the official Lenovo forums started noticing that search results were being injected with sponsored links (like what happens when a machine is infected with typical adware or spyware) as far back as last September, and some even report that sites including Kelley Blue Book and JetBlue wouldn't render properly at all. This apparently isn't the only problem, however. As Facebook engineer Mike Shaver recently discovered, the program at fault, Superfish, appears to install a man-in-the-middle certificate that allows outside parties to take a peek at secure websites you might be visiting, too. Like your bank's, for example.