The hacking group/movement antisec has replaced every image on imageshack with a hacked image and has posted the following to the full disclosure mailing list.

"

        Proudly presents...
                 _                                     _                _   
                (_)                                   | |              | |  
                 _ _ __ ___   __ _  __ _  ___    ___  | |__   __ _  ___| | __
                | | '_ ` _ \ / _` |/ _` |/ _ \' / __| | '_ \ / _` |/ __| |/ /
                | | | | | | | (_| | (_| |  __/  \__ \ | | | (_| | (__|   <
                |_|_| |_| |_|\__,_|\__, |\___|  |___/ |_| |_|\__,_|\___|_|\_\
                                    __/ |                               
                                   |___/                                

        Anti-sec. We're a movement dedicated to the eradication of
        full-disclosure. We wanted to give everyone an image of what we're all
        about.

        Full-disclosure is the disclosure of exploits publicly - anywhere. The
        security industry uses full-disclosure to profit and develop
        scare-tactics to convince people into buying their firewalls,
        anti-virus software, and auditing services.

        Meanwhile, script kiddies copy and paste these exploits and compile
        them, ready to strike any and all vulnerable servers they can get a hold
        of. If whitehats were truly about security this stuff would not be
        published, not even exploits with silly edits to make them slightly
        unusable.

        As an added bonus, if publication wasn't enough, these exploits are
        mirrored and distributed widely across the Internet with a nice little
        advertisement embedded in them for the crew or website which first
        exposed the vulnerability to the public.

        It's about money. While the world is difficult to change, and money will
        certainly continue to be a very important in the eyes of many, our

        It's about money. While the world is difficult to change, and money will
        certainly continue to be a very important in the eyes of many, our
        battle is that of the removal of full-disclosure for the purpose of
        making it harder for the security industry to exploit its consequences.

        It is our goal that, through mayhem and the destruction of all
        exploitive and detrimental communities, companies, and individuals,
        full-disclosure will be abandoned and the security industry will be
        forced to reform.

        How do we plan to achieve this? Through the full and unrelenting,
        unmerciful elimination of all supporters of full-disclosure
        and the security industry in its present form. If you own a security
        blog, an exploit publication website or you distribute any exploits...

        "you are a target and you will be rm'd. Only a matter of time."

        This isn't like before. This time everyone and everything is getting 
      owned.

                 Signed: The Anti-sec Movement

                "No images were harmed in the making of this... image."

anti-sec:~/pwn# perl img-scan.pl

Found img1.imageshack.us - lighttpd/1.4.18 - SSH-1.99-OpenSSH_4.5
[snip]
Found img998.imageshack.us - lighttpd/1.4.18 - SSH-1.99-OpenSSH_4.5

anti-sec:~/pwn# perl mass-pwn.pl

Connecting...

Linux worf.imageshack.us 2.6.15-1.2054_FC5 #1 SMP Tue Mar 14
15:48:20 EST 2006 x86_64 x86_64 x86_64 GNU/Linux

Replacing images...

img1 --> img998

All images replaced: http://img998.imageshack.us/antisec.jpg

        - anti-sec."

Thousands (Millions?) of sites img src'ing from imageshack are now displaying this hacked image. Certainly one of the largest pwnages I've seen in a long time. This is also the same group which recently hacked Astalvista.

SANS coverage: http://isc.sans.org/diary.html?storyid=6769
Antisec's Site: http://romeo.copyandpaste.info/