Monday, August 04, 2003

Patch your software--it'll help secure the Net
When a security researcher or vendor first releases information about a software vulnerability, the clock starts ticking. How long will it be until a malicious user takes advantage of it?

According to Gerhard Eschelbeck, CTO of computer security company Qualys, not very long. He says that, for about 80 percent of publicly known vulnerabilities, exploit code (such as a worm or virus) appears within 60 days of their announcement.

THIS INFORMATION was presented by Eschelbeck at last week's Black Hat USA 2003 conference in Las Vegas, as part of his Law of Vulnerability project. The project is the result of about a year's worth of analysis of the company's extensive vulnerability database.

Eschelbeck's findings give validity to what security experts have been saying for years: There's a limited window between the time a vulnerability is announced and when a patch must be applied.

If home users and corporate system administrators don't already know how important it is to apply fixes as soon as they're available, now there's concrete data to prove it. Eschelbeck's research should also help sys admins justify the time and expense of implementing these patches to their bosses--and thus shorten the life of destructive worms and viruses.

After discussing the "60-day rule," Eschelbeck went on to present another key point from the Law of Vulnerability project: Half of all affected systems are patched within 30 days of the vulnerability's announcement--while the other half remain open to attack.

These unpatched systems keep vulnerabilities--and the worms and viruses that take advantage of them--alive on the Internet long after they're released. As an example, Eschelbeck cited the MS Index Server vulnerability that gave rise to Code Red in 2001. Code Red disappeared for a while, but now is back thanks to the recent appearance of unpatched installations of the server software.

JOINING ESCHELBECK at the Black Hat session were several other security experts, including Black Hat Briefings CEO Jeff Moss and BindView's Mark Loveless (aka Simple Nomad). Loveless pointed out that along with public announcements, malicious users find out about unannounced or recently announced vulnerabilities through an online "black market."

This means malicious users may know about even more vulnerabilities than many security experts or the general public, and underscores the need for software developers to hold off on releasing products until they are truly secure.

http://www.zdnet.com/anchordesk/stories/story/0,10738,2914418,00.html
Music Downloading, File-sharing and Copyright: A Pew Internet Project Data Memo
More than two-thirds of Americans who swap songs online don't care whether the music is copyrighted, according to a study, despite the record industry's antipiracy crackdown.

The struggle to enforce copyright laws in the digital age continues to be an uphill battle for content owners. Data gathered from Pew Internet & American Life Project surveys fielded during March - May of 2003 show that a striking 67% of Internet users who download music say they do not care about whether the music they have downloaded is copyrighted. A little over a quarter of these music downloaders - 27% - say they do care, and 6% said they don’t have a position or know enough about the issue.

The number of downloaders who say they don’t care about copyright has increased since July-August 2000, when 61% of a smaller number of downloaders said they didn’t care about the copyright status of their music files.

Of those Internet users who share files online (such as music or video) with others, 65% say they do not care whether the files they share are copyrighted or not. Thirty percent say they do care about the copyright status of the files they share, and 5% said they don’t know or don’t have a position.

http://www.pewinternet.org/reports/toc.asp?Report=96

Saturday, August 02, 2003

SitePoint Flash Scripts
SitePoint's Flash Script resource hass just been updated -- all recent additions are marked "New!"

Here, you'll find an ever-increasing number of quick, simple Flash scripts that you can easily apply to your latest project. No matter what you're after, it's here! The scripts are categorised as:


Graphic Effects (below)
Build Your Own... With Flash
Use Flash To...

Compatibility: Please note that all scripts presented here are compatible with Flash 5, unless otherwise stated.

http://www.sitepoint.com/article.php/1125

Friday, August 01, 2003

DefCon, Black Hat: Action required
More serious vulnerabilities have been discovered in the past month, highlighting the fact that security hasn't improved despite strong talk from government and industry. Security experts are gathering for two conferences in Las Vegas hoping their solutions won't fall on deaf ears.

http://zdnet.com.com/2251-1110-5058151.html
Simple and affordable steps can improve SMB security postures
Many small and midsize businesses (SMBs) don't believe that a hacker would target their enterprise. Although it's true that many attacks are planned to vandalize highly visible Web sites, any enterprise that has inadequate security should be concerned. The recent emergence of the SQL Slammer worm demonstrates the challenges SMBs face from a mass attack that hits any vulnerable IP address. In attacks such as Nimda, Code Red, and Slammer, hackers are going after systems at random, so being an SMB doesn't make you any less attractive as a target.

Also making SMBs prime targets are the following factors: 90 percent of SMBs are running Windows on their servers, 80 percent are using Outlook and Exchange for e-mail, and 70 percent are using SQL databases. Microsoft software is a major target for hackers because it has large numbers of vulnerabilities, and its market share gives hackers the ability to have a massive impact. Security breaches at smaller businesses don't grab headlines the way attacks on Fortune 500 companies do, but this doesn't mean they're any less devastating.

Through 2005, 40 percent of SMBs that manage their own network security and use the Internet for more than e-mail will experience a successful Internet attack, and more than half of them won't know they were attacked (0.8 probability).…



http://techupdate.zdnet.com/techupdate/stories/main/0,14179,2914399,00.html
Hackers intent on anonymously sending data across the Internet have a new tool.
A program called NCovert uses spoofing techniques to hide the source of communications and the data that travels over the network--a potential boon to both privacy advocates and hackers, said Mark Lovelace, senior security researcher for network protection firm BindView, who unveiled the program Thursday at the Black Hat Briefings security conference here.

"I am not going to beat around the bush," Lovelace said. "If you have something to hide, you would use this--so it could help black hats (criminal hackers)."

The technique essentially creates a covert channel for communications by hiding four characters of data in the header's initial sequence number (ISN) field. The header is the part of data packets that tells network hardware and servers how to handle the information. The header also includes source and destination Internet protocol (IP) addresses. Those addresses are used to add anonymity to the communications.


Lovelace, known among the security community as "Simple Nomad," said the key to the technique is to forge the source of the IP address to look like the intended recipient of the information, while the destination IP addresses points to another third-party server on the Internet.

The hacker would then send off a data packet to the third-party server with any valid-looking information in the data fields, but the real message would be hidden in four bytes of the ISN field. The packet would contain a message indicating to the third-party server that a computer wants to start a communications session. The server would acknowledge the message, but because of the forged source address, the message would be forwarded on to the recipient.


http://zdnet.com.com/2100-1105_2-5058535.html
More spam in July than during all of last year
Anybody still unconvinced about the scale of the spam epidemic should consider this fact: MessageLabs intercepted more spam in the last month than in the whole of 2002.

http://silicon.com/news/165/1/5385.html

Sunday, July 27, 2003

JBook
JBook lets users retrieve, read, and bookmark electronic texts from Project Gutenberg and other sources. It transforms any computer into an electronic book reader with an entire library available on demand.

How To Use:

Download jbook-1.2.zip (108 KB)
Unzip with a compression utility.

Java Source: Available

Status: Free
http://javaboutique.internet.com/applications/JBook/jbook-1.2.zip

http://javaboutique.internet.com/applications/JBook/
Digging for Googleholes
But the oracle—recently described as "a little bit like God" in the New York Times—is not perfect. Certain types of requests foil the Google search system or produce results that frustrate more than satisfy. These are systemic problems, not isolated ones; you can reproduce them again and again. The algorithms that Google's search engine relies on have been brilliantly optimized for most types of information requests, but sometimes that optimization backfires. That's when you find yourself in a Googlehole.

Googlehole No. 1: All Shopping, All the Time. If you're searching for something that can be sold online, Google's top results skew very heavily toward stores, and away from general information. Search for "flowers," and more than 90 percent of the top results are online florists. If you're doing research on tulips, or want to learn gardening tips, or basically want to know anything about flowers that doesn't involve purchasing them online, you have to wade through a sea of florists to find what you're looking for.

The same goes for searching for specific products: Type in the make and model of a new DVD player, and you'll get dozens of online electronic stores in the top results, all of them eager to sell you the item. But you have to burrow through the results to find an impartial product review that doesn't appear in an online catalog.

I suspect this emphasis is due to the convention of linking to an online store when mentioning a product, whether it's a book, CD, or outdoor grill. In addition, a number of sites—such as DealTime—track the latest prices and availability of thousands of items at online stores, which creates even more product links in Google's database. Because PageRank assumes that pages that attract a lot of links are more relevant than pages without links, these most-linked-to product pages bubble up to the top.

Googlehole No. 2: Skewed Synonyms. Search for "apple" on Google, and you have to troll through a couple pages of results before you get anything not directly related to Apple Computer—and it's a page promoting a public TV show called Newton's Apple. After that it's all Mac-related links until Fiona Apple's home page. You have to sift through 50 results before you reach a link that deals with apples that grow on trees: the home page for the Washington State Apple Growers Association. To a certain extent, this probably reflects the interest of people searching as well as those linking, but is the world really that much more interested in Apple Computer than in old-fashioned apples?

At this stage in the Web's development, people who create a lot of links—most notably the blogging community—tend to be more technologically inclined than the general population, and thus more likely to link to Apple Computer than something like the Washington State Apple Growers Association. (This process is sometimes known as "googlewashing," where one group of prolific linkers can alter the online associations with a given word or phrase.) But there's another factor here, which is that categories that don't have central, well-known sites devoted to them will fare poorly when they share a keyword with other categories.…

Googlehole No. 3: Book Learning. Google is beginning to have a subtle, but noticeable effect on research. More and more scholarly publications are putting up their issues in PDF format, which Google indexes as though they were traditional Web pages. But almost no one is publishing entire books online in PDF form. So, when you're doing research online, Google is implicitly pushing you toward information stored in articles and away from information stored in books.…

http://slate.msn.com/id/2085668/

Thursday, July 24, 2003

Cracking Windows passwords in seconds
If your passwords consist of letters and numbers, beware.
Swiss researchers released a paper on Tuesday outlining a way to speed the cracking of alphanumeric Windows passwords, reducing the time to break such codes to an average of 13.6 seconds, from 1 minute 41 seconds.

The method involves using large lookup tables to match encoded passwords to the original text entered by a pereson, thus speeding the calculations required to break the codes. Called a time-memory trade-off, the situation means that an attacker with an abundance of computer memory can reduce the time it takes to break a secret code.

The results highlight a fact about which many security researchers have worried: Microsoft's manner for encoding passwords has certain weaknesses that make such techniques particularly effective, Philippe Oechslin, a senior research assistant and lecturer at the Cryptography and Security Laboratory of the Swiss Federal Institute of Technology in Lausanne (EPFL), wrote in an e-mail to CNET News.com.

"Windows passwords are not very good," he wrote. "The problem with Windows passwords is that they do not include any random information."

Oechslin outlined a way to take advantage of that lack of randomness on Tuesday when he published a paper and a Web demonstration of the technique. The research builds on previous work showing that encryption algorithms can be sped up with the help of large lookup tables. Increasing the size of the lookup tables reduces the amount of time, on average, that it takes to search for a password.

The researcher used a 1.4GB lookup table and a single computer with an AMD 2500+ processor and 1.5GB RAM to offer people a way to test the process online.

http://lasecpc13.epfl.ch/ntcrack/

http://zdnet.com.com/2100-1105_2-5053063.html
Online Photo Resource Guide™
These days, there are a lot of ways to put photo albums on the web for free, or almost free, or for some kind of subscription fee. The intent of these sites is to allow consumers to upload pictures, invite friends to view them, send photo greeting cards, and sell ancillary merchandise and services.

These sites vary in their restrictions on amount of storage and their promises of retention, but hey! as long as they're free, sign up as often as you like. There is a definite trend for free sites to run out of money and either be acquired, disappear, or convert to some sort of subscription model, not necessarily in a manner convenient to their current customers. If you expect any of these sites, paid or free, to preserve your precious photos for ever, you are very foolish indeed. See thecasualty list if you doubt. My prediction; more instability until the price structure has more relationship to reality. The retail price of storage is around $1/Gb, so how can anyone expect to correct $50/yr for a few megabytes of storage? These sites do have expenses, but they're not primarily for storage.


The list is in approximate order of preference, from the viewpoint of a consumer seeking mass storage; but each site has special merits and demerits, so your preferences may differ.…

http://www.andromeda.com/people/ddyer/photo/albums.html
eFXservices.com -- Quickstart
An Internet service that is an extraordinary experience for photo or image manipulation. No application software or plug-ins are needed to use this service. A digital image or photo on the Net (or photo from eFXservices Albums), a fast connection to the Internet, and the latest browser is the only requirement. To enhance productivity, feature rich Net services for photo movement and photo management, considered essential, has been provided. All the services for manipulation, movement and management run remotely on a web server somewhere on the Internet.

Quickstart.

You can start using the service with a (fast) Internet connection and latest browser. The demo has Albums from which you may select photos and images for use in eFXservices. Of course you may also upload your own digital photos later. Please use the latest Microsoft Internet Explorer (Ver. 4.X or higher) or Netscape Communicator (Version 4.X or higher). In the demonstration system we do not store any photos that you may have upload photos and we clean up (restore) our Albums after you leave. So go ahead … we hope you have a great experience.

http://efxservices.com/quickstart.html

Wednesday, July 23, 2003

SCO Copyright Claims Questioned
Eben Moglen, a professor at Columbia Law School and general counsel for the Free Software Foundation, told eWEEK in an interview on Monday that those business Linux users who are not modifying, copying or distributing the Linux kernel can not be targeted for copyright infringement.

"Possession of infringing material is not a copyright violation because the copyright owner doesn't have an exclusive right to possess the work. The copyright statute gives the copyright holder exclusive power to copy, modify and distribute the work, so those people copying, modifying or distributing in violation of the owner's exclusive rights are infringing. Those who aren't copying, modifying or distributing are not in violation," he said.

Just using infringing code was no more of a copyright violation than possessing a photocopied book, he said. That act of copying and distributing is the infringement. "So end users will probably look at this situation and assume that SCO is not talking to them, including the 1,500 global CEOs who received letters from SCO [warning them that Linux was an unauthorized derivative of Unix and warning them of potential legal liability].

"The vendors will also probably look at SCO's UnixWare license proposal and say that under Section 7 of the GNU General Public License they can't take that license and will have to decide whether there is an infringement they need to obey or simply to disregard these moves as a nuisance," he said.

But SCO on Monday made clear that it was going after business and enterprise Linux users rather than the Linux distributors and vendors such as Red Hat Inc. and SuSE Inc. SCO CEO Darl McBride and David Boies, his chief legal counsel from Boies, Schiller & Flexner LLP, made it clear that SCO intends to use every means possible to protect the company's Unix source code and to enforce its copyrights.…

http://www.eweek.com/article2/0,3959,1200766,00.asp
USING FLASH AS AN XML PROXY
by Phillip Perkins

Microsoft provides an ActiveX tool, the XMLHTTP component, for sending
data to Web servers within a client HTML page. Or, if you don't want to
use Microsoft technology, you can create a Java proxy to handle this
exchange of information. Another tool you might want to consider is Flash.

Flash can send XML data to Web servers through the XML object. This
object contains two methods for sending XML data to the server: send() and
sendAndLoad(). The first method sends the XML contents in the current XML
object to the Web server. The second method sends the current contents to
the server and loads the result XML to an XML object.

The only thing left is to interact with the data in the current HTML
page. You can use fscommand() to call JavaScript (or VBScript) functions
within the HTML page from Flash. If you know how to use this functionality,
you can create an XML proxy for your XML data.

From Builder.com Web Development Zone newsletter.
Phillip Perkins is a contractor with Ajilon Consulting. His experience
ranges from machine control and client/server to corporate intranet
applications.

http://www.geocities.com/phil_perkins_1/Flash/xml_proxy.zip
Free TechRepublic Downloads -- Tools & Executables
90 Downloads in "Tools & Executables"
Sorted by Date

http://www.techrepublic.com/download_browse.jhtml;jsessionid=13Q1IZ2KXSUPHTQQACQCFEY?browseParam=tools_exe&category=Tools+%26+Executables&total=90

Tuesday, July 22, 2003

Windows XP Internet Connection Sharing
Internet Connection Sharing (ICS) enables a Windows computer to share its Internet connection with computers on local area networks. It's been around since Windows 98 SE, and with the launch of Windows XP, it's only gotten better.


Windows XP ICS has some notable advantages over the versions of ICS in Windows 98 Second Edition and Windows Me:


It's easier to set up. There's no software to install, and it doesn't add any network components or protocols.

It's much more reliable and much less likely to cause network problems.

You can create a Network Bridge connecting two or more local area networks and share the Internet connection with the computers on all of them. This is especially useful if your XP computer is connected to both a wired and wireless network.

ICS client computers can use XP's Internet Gateway to monitor and control the server computer's Internet connection. If you have a dial-up connection, you can connect and disconnect when deciding whether to enable ICS.

However, XP ICS is missing some features of those earlier versions. You can't disable the DHCP server, change the server computer's IP address, or change the range of addresses allocated by the DHCP server.

http://www.practicallynetworked.com/sharing/xp_ics/

Monday, July 21, 2003

Update: New Bill Cracks Down Further On File-Sharing
A bill pending before the House of Representatives would make the intent to share a copyrighted file grounds for prosecution, virtually eliminating the burden of proof from law-enforcement agencies.

The proposed bill, submitted by Rep. John Conyers (D-MI) and co-sponsored by Howard Berman (D-CA) would modify the U.S. Title Code, adding the stipulation that if a user makes accessible a copyrighted file to a file-sharing service without permission he can be charged with up to ten counts of copyright violations.

The bill also would require file-sharing services to alert users that they are downloading "enabling software", or software that could be used to share copyrighted works. The bill would require file-sharing services to stipulate that downloading the P2P application could pose a privacy and security risk to the user's computer. Other language in the bill would crack down on the practice of supplying false information to domain name registrars.

The bill is formally titled the "Author, Consumer, and Computer Owner Protection and Security (ACCOPS) Act", a copy of which can be found on the Electronic Frontier Foundation's web site. ACCOPS is designed "to encourage the development and distribution of creative works by enhancing domestic and international enforcement of the copyright laws, and for other purposes."


The bill is designed to protect the entertainment industry, Conyers said in a statement.

"Digital piracy is one of the biggest problems facing creators of copyrighted content," Conyers said. "Even though the artists, authors, actors, movie companies, software developers, publishers, and record studios create this country's number one export, they are suffering because people are taking advantage of technology to share and obtain their valuable content for free."

"On top of that, much of this new technology is creating security and privacy risks for everyday computer users," Conyers added. "While existing laws have been useful in stemming this problem, they simply do not go far enough. That is why Congressman Berman, myself and other Judiciary Committee members are introducing legislation to give consumers, law enforcement, and content creators the tools they need to protect their rights."

The bill would modify Section 506 of Title 17 of the U.S. code, the highly complex document which forms the basis of federal law.

The clause in question currently states that users will be subject to penalties "by the reproduction or distribution, including by electronic means, during any 180-day period, of 1 or more copies or phonorecords of 1 or more copyrighted works, which have a total retail value of more than $1,000".

But under the proposed bill, simply placing the file into a folder or other collection of files accessible to the file-sharing application would apparently be enough to break the law. The bill does not require proof that the work was actually disseminated to other individuals.…

http://www.extremetech.com/article2/0,3973,1197594,00.asp
The firewall in a multilayer security approach
What a firewall can and can’t do
A firewall can be hardware- or software-based. The tightest security is obtained when the two options are used in combination. Yet, even in this approach, a firewall system has its limits:

It can’t protect the enterprise from attacks and threats from within your network.
Virus protection is limited without additional software and specialized technologies.
A firewall can’t protect an organization from attacks that avoid a firewall—an external hack via a dial-up account can fully compromise the entire security plan.

Firewall technology, obviously, also can’t protect organizations from employee carelessness or mistakes with passwords and unauthorized access. Only specific tools and policy guidelines on expected computer use and access can thwart those issues.

membership recquired (free)
http://www.techrepublic.com/article.jhtml?id=r00520030131mbr01.htm&fromtm=e044-1
How to make sure a firewall does its job
If you think deploying a firewall is the start and end of the security effort, you’re right—at least from the point of view from crackers, virus pushers, and other assorted bad guys.

Getting a firewall to do what it promises—protect the network that sits behind it—doesn’t begin with an equipment purchase and end with the plug-in. In fact, the plug-in is when the real work begins. As one technical coordinator says, “it’s a never-ending job.” Firewall implementation starts with a full security assessment and continues with constant vigilance over the solution put in place.

membership recquired (free)
http://www.techrepublic.com/article.jhtml?id=r00520030129cww01.htm&fromtm=e044-1
Take a peek inside this administrator's virtual toolbox
A nice collection of applications, utilities, hardware, and other tools used to troubleshoot, perform routine maintenance, enforce security, measure performance, test software, and execute countless other administrator tasks, along with a short description of each with the hope that some of these could prove useful for you as well.

http://www.techrepublic.com/article.jhtml?id=r00220020417tmg01.htm&fromtm=e064&_requestid=94290