If you still think malware on a Mac is more myth than reality you may
want to talk to the security engineers over in Cupertino at a rather
prestigious fruit company.
According to Reuters, "Apple Inc. was recently attacked by hackers who infected the Macintosh computers of some employees".
More specifically Apple engineers had their Mac OS X laptops infected by the same zero-day Java vulnerability that infected Facebook last week.
In a statement Apple made to The Loop
an Apple spokesperson said “The malware was employed in an attack
against Apple and other companies, and was spread through a website for
software developers."
From
the information that is publicly available this statement reaffirms
that this is likely what has become known as a "watering hole attack".
The concept is that it is much easier to compromise a site where
people might frequently go than it is to assault the company directly.
Trying to break through all of the layers of protection at Facebook and Apple is going to be extremely difficult.
Yet it might be much easier to compromise the security of a small
application developer's website that Apple, Facebook and other high
value targets might frequently visit.
I think it is fair to say Apple's OS X is popular enough among people
who are likely to be targeted by malware that it is no longer being
neglected by the criminals behind online attacks.
Those people who have said "only dumb Mac users would voluntarily
install malware" might be surprised to learn that even Apple's own
engineers can fall victim to a drive-by.
This isn't about the capability of a user or about the kinds of
websites one might choose to frequent. An unpatched vulnerability
impacts all of us the same way.
This is why it is essential to run anti-virus regardless of the
platform in use. It is also important to carefully monitor network
traffic by using an IPS and firewall.
Things
do get past anti-virus and an effective defense starts with preventing
the infection at the start, but detecting it if you aren't able to stop
the infection.
People often think of their firewall as a simple blocking mechanism, but it also serves a forensic purpose.
If you are Apple or Facebook and you need to know what data may have
been ferreted off to your criminal overlords the detailed logs from your
monitoring solutions are essential to the forensic investigation team.
While it might be unwieldy to keep two or three years worth of
logging, it may well be worth your trouble if you are faced with a
targeted compromise.
What should you do as a result of this? If you are a Mac user you
should be sure to keep your computer patched. Apple stated they will be
releasing a Java malware removal tool this afternoon to respond to this
attack.
It is also a good idea to run an up to date anti-virus to detect any future attacks and to disable Java in the browser if you don't require it for day to day web surfing.
To be fair, that advice applies to all computer users whether they
prefer Windows, OS X or Linux. Many times staying safe isn't convenient,
but it is an investment that pays off in the long run.
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