<p>Less than 24 hours after admitting some of its employees computers had been hacked, Apple has pushed out a security update to users of its Mac computers.</p><p>The patch fixes issues surrounding Java, a popular programming language that had a major security hole allowing malicious code to infect machines.</p><p>Apple was among several companies targeted in recent weeks by hackers exploiting the Java weakness.</p><p>One expert criticised Apple, saying it "could have been quicker" to act.</p><p><a href="http://www.bbc.co.uk/news/technology-21519856">Keep reading...</a></p>