OS X Yosemite still open to Rootpipe hijacking, says ex-NSA bod Apple's attempt to fix a serious security weakness in OS X has fallen short, leaving users still vulnerable to malware seizing their Macs, it is claimed. Patrick Wardle, director of research at Synack, reckons Cupertino has not been able to fully kill off the so-called "Rootpipe" backdoor that was supposed to be eradicated in last week's OS X Yosemite 10.10.3 update. Apple has refused to address the vulnerability in older versions of OS X, such as version 10.9.x. The Rootpipe vulnerability, present in OS X since at least 2011,...