Some Mac users were taken by surprise Thursday as their computers
stopped running programs written using the Java programming language
after Apple blocked Java due to security problems.
Java allows
programmers to write a wide variety of Internet applications and other
software programs and run them on most computers, including Apple Inc.'s
Mac. However, earlier this month the U.S. Department of Homeland
Security recommended disabling Java in Web browsers to avoid potential
hacking attacks. Oracle Corp., which owns Java, has issued updates that
fix known vulnerabilities, but the DHS expects that there are more flaws
in Java's coding.
Apple sends out virtual "blacklists" to
Internet-connected Macs, instructing them not to run certain programs.
Apple is blocking the latest version of Java from running on the most
recent versions of its Mac operating system, and blocking an older
version, Java 6, from running on the older version of its Mac system,
called Snow Leopard. The blocks affect programs and online games that
use Java in Web browsers.
Oracle had no immediate comment on Apple's action.
Among
those Java users inconvenienced by the unannounced block was the photo
department of The Associated Press, which relies on a Java application
to manage and distribute photos.
"The situation caught us by
surprise and a number of our machines could not operate for a time, but
we had enough capability to work around the problem in the meantime,"
said AP spokesman Paul Colford. "We expect the affected machines to be
operating by day's end."
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