LulzSec has fallen silent, with nary a Twitter post in two months.  The pace of its successor AntiSec's efforts has slowed.  And top LulzSec chief Topiary -- who turned out to be a teenager native of the UK's Shetland Islands -- awaits trial, after being caught by authorities who traced an account he used to play Xbox games online.  

Now more arrests are pouring in.  A 23-year-old Phoenix, Arizona native, Cody Andrew Kretsinger, has been arrested ("recursion").  You may recall that recursion showed up at numerous times in LulzSec's chat logs during the attacks [1][2][3] on Sony Corp. (TYO:6758), but quit the group in June [source] as it stepped up attacks on the U.S. government.  Recursion reportedly was a relatively novice hacker relying heavily on SQL injection, a technique frowned upon by more sophisticated hackers.

Police in the UK last month also arrested 5 men ages 16 to 26 who allegedly together managed LulzSec chief Kayla's online identity.  Kayla claimed to be "a 16 year-old girl."  LulzSec/Anonymous chief Sabu confirms that Kayla has been arrested, though he/she has not verified that the UK authorities theory of multiple users' involvement is true.

According to Sabu, he and one other LulzSec member are the only ones walking free.  Topiary, Kayla, Recursion, Tflow, Pwnsauce, and Palladium have all been arrested.  The other remaining free member appears to be Avunit, who was not a founding member, but participated in many of the group's key attacks.

Of course LulzSec was only a particularly bold subclan of the greater hacking collective Anonymous, who lives on via its thousands of members.  But active attackers within Anonymous have been hit with recent arrests as well.  Christopher Doyon, 47, of Mountain View, California, and Joshua Covelli, 26, of Fairborn, Ohio, allegedly members of Anonymous subclan People's Liberation Front, were arrested this week for allegedly orchestrating a distributed denial of service attack on the county of Santa Cruz, California back in 2010.

Anonymous isn't willing to go down without a fight, though.  Despite the recent arrests, members like Sabu remain defiant.  They have planned a "Day of Vengeance" on various parties in New York City in response to crackdowns on Wall Street protesters.  In a note for the group-without-a-leader writes, "... Anonymous and other cyber liberation groups will launch a series of cyber attacks against various targets including Wall Street, Corrupt Banking Institutions - and the NYC Police Department."