(CNN Money) Computer maker Lenovo has been shipping laptops prepackaged with malware that makes you more vulnerable to hackers – all for the sake of serving you advertisements.
Made by a company called "Superfish," the software is essentially an Internet browser add-on that injects ads onto websites you visit.
Besides taking up space in your Lenovo computer, the add-on is also dangerous because it undermines basic computer security protocols.
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That's because it tampers with a widely-used system of official website certificates. That makes it hard for your computer to recognize a fake bank website, for instance.