FZip Update

We just released an update for FZip (the Actionscript 3 class library to load standard ZIP archives and extract/decompress contained files):

  • Added support for Adobe Air. The Adobe Air runtime provides a low level inflate method, making it possible to load any ZIP archive and decompress compressed files without the need of injecting Adler32 checksums.
  • Added FZipLibrary class for higher level access to files in a ZIP archive. “FZipLibrary processes files (based on file extensions) from an FZip instance and converts them into usable formats. Files can be converted to either a BitmapData or DisplayObject classes. Data embedded in SWF files (like classes) can also be retrieved. Flash’s built-in Loader class is used to convert formats, so the only formats currently supported are ones that Loader supports. As of this writing they are SWF, JPEG, GIF, and PNG.”
  • Bug fix: There was a problem with filenames containing special characters. Filename encoding now defaults to UTF-8. In case the filenames are encoded differently in your ZIP, you can specify the encoding in the FZip constructor.

Special thanks to Daniel Wabyick at Adobe for contributing the Adobe Air support!




Hello -

This email is regarding a potential security concern related to your
'xxxxxx' FTP account.

We have detected what appears to be the exploit of a number of
accounts belonging to DreamHost customers, and it appears that your
account was one of those affected.

We're still working to determine how this occurred, but it appears
that a 3rd party found a way to obtain the password information
associated with approximately 3,500 separate FTP accounts and has
used that information to append data to the index files of customer
sites using automated scripts (primarily for search engine
optimization purposes).

Our records indicate that only roughly 20% of the accounts accessed -
less than 0.15% of the total accounts that we host - actually had
any changes made to them. Most accounts were untouched.

We ask that you do the following as soon as possible:

1. Immediately change your FTP password, as well as that of any other
accounts that may share the same password. We recommend the use of
passwords containing 8 or more random letters and numbers. You may
change your FTP password from the web panel ("Users" section, "Manage
Users" sub-section).

2. Review your hosted accounts/sites and ensure that nothing has been
uploaded or changed that you did not do yourself. Many of the
unauthorized logins did not result in changes at all (the intruder
logged in, obtained a directory listing and quickly logged back out)
but to be sure you should carefully review the full contents of your

Again, only about 20% of the exploited accounts showed any
modifications, and of those the only known changes have been to site
index documents (ie. 'index.php', 'index.html', etc - though we
recommend looking for other changes as well).

It appears that the same intruder also attempted to gain direct
access to our internal customer information database, but this was
thwarted by protections we have in place to prevent such access.
Similarly, we have seen no indication that the intruder accessed
other customer account services such as email or MySQL databases.

In the last 24 hours we have made numerous significant behind-the-
scenes changes to improve internal security, including the discovery
and patching to prevent a handful of possible exploits.

We will, of course, continue to investigate the source of this
particular security breach and keep customers apprised of what we
find. Once we learn more, we will be sure to post updates as they
become available to our status weblog:


Thank you for your patience. If you have any questions or concerns,
please let us know.

- DreamHost Security Team