Java 7 Update 21 Security Improvements in Detail another German article of mine was published. Read it online free of charge in German on the heise.de/developer website.
Java stands in the line of fire since several months. The security holes are covered in detail. Not only in specialized media, but were even published by popular press and reached many end users. Oracle responds consistently, but comparatively noiseless. On 16 April 2013 the Java 7 Update 21 has been published with the most far-reaching changes so far. The security settings will now longer to silently execute unsigned applets.