Jamie Oliver’s website was affected by a “malware problem”, a spokesman for the celebrity chef has acknowledged.
Malicious code sought to exploit vulnerabilities in users’ systems and install malware, researchers found.
If installed, that malware could give hackers control of users’ computers, said one security consultant.
A spokesman for the Jamie Oliver Group played down the seriousness of the problem and told the BBC that it had been fixed.
According to Malwarebytes, unknown hackers either broke into Mr Oliver’s site and placed malicious code there, or exploited existing code.
The script would direct unsuspecting users to a WordPress site that hosted yet more malicious code. That would then run an exploit kit that would seek to find vulnerabilities in any user’s system and install malware called Dorkbot.
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