Apologize for the [very] late reply. There's no violation to the second law. The entropy of a black hole scales with its area, and in classical general relativity the area is always non-decreasing as entropy should be. If one takes into account quantum mechanics then the black hole area shrinks in time, but the Hawking particles carry a lot of entropy, so again there is no violation to the second law.
Apologize for the [very] late reply. There's no violation to the second law. The entropy of a black hole scales with its area, and in classical general relativity the area is always non-decreasing as entropy should be. If one takes into account quantum mechanics then the black hole area shrinks in time, but the Hawking particles carry a lot of entropy, so again there is no violation to the second law.