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Opera says hackers pilfered expired code-signing certificate |
June 27, 2013
Opera Software said Wednesday hackers pilfered from its internal systems at least one code-signing certificate that was used to sign malicious software.The Oslo-based company, which makes a mobile and desktop web browser, wrote in a blog post that it believes a few thousand Windows users may have automatically installed malicious software between 01.00 and 01.36 UTC on June 19, the day the attack was detected and halted.Code-signing certificates are used to cryptographically verify that a piece of software comes from its purported publisher. By using the certificate, it would have appeared to users that the malware was legitimate software from Opera, such as the company's browser.In its post, Opera included a link to VirusTotal, a website that tests malware samples against security programs to see if the malware is detected. The VirusTotal page shows the SHA256 hash of what is presumably the malware that used the expired code-signing certificate.To read this article in full or to leave a comment, please click here
Link: http://www.pcworld.com/article/2043123/opera-says-hackers-pilfered-expired-codesigning-certificate.html#tk.rss_all
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