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[{"id":483,"title":"Self-taught through trial and error","votes":548,"type":"x","order":1,"pct":78.51,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.3,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.87,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.32,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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67

Investigation of USENET Images for Steganography Detection Techniques

After scanning two million images from eBay without finding any hidden messages, we extended the scope of our analysis. A detailed description of the detection framework can be found in Detecting Steganographic Content on the Internet. This page provides details about the analysis of one million images from the Internet Archive's USENET archive. Processing the one million images with stegdetect results in about 20,000 suspicious images. We launched a dictionary attack on the JSteg and JPHide positive images. The dictionary has a size of 1,800,000 words and phrases. The disconcert cluster used to distribute the dictionary attack has a peak performance of roughly 87 GFLOPS. . . After scanning two million images from eBay without finding any hidden messages, we extended the sco. scanning, million, images, without, finding, hidden, messages, extended. . LinuxSecurity.com Team

Calendar 2 Jul 10, 2006 User Avatar LinuxSecurity.com Team Cryptography
74

Cisco EAP-FAST: New WLAN Security Protocol Against Brute Force Attacks

Cisco Systems Inc. has developed a new wireless LAN security protocol designed to defeat brute force dictionary attacks that capture a user's passwords, and it submitted a draft of the protocol to the Internet Engineering Task Force (IETF) on Monday. Cisco developed the new WLAN Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) to defeat dictionary attacks against unencrypted passwords in its earlier, proprietary Lightweight Extensible Authentication Protocol (LEAP). Cisco posted a security bulletin last August warning users that LEAP is vulnerable to such attacks. . . .. Cisco Systems Inc. has developed a new wireless LAN security protocol designed to defeat brute force dictionary attacks that capture a user's passwords, and it submitted a draft of the protocol to the Internet Engineering Task Force (IETF) on Monday. Cisco developed the new WLAN Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) to defeat dictionary attacks against unencrypted passwords in its earlier, proprietary Lightweight Extensible Authentication Protocol (LEAP). Cisco posted a security bulletin last August warning users that LEAP is vulnerable to such attacks. Ron Seide, WLAN product line manager at Cisco, said EAP-FAST protects against dictionary attacks by sending password authentication between a WLAN client and wireless LAN access points through a secure, encrypted tunnel. Seide added that EAP-FAST also eliminates the need for enterprises to install separate servers to handle the digital certificates used in another WLAN security system, the Protected Extensible Authentication Protocol (PEAP). Seide said that Cisco believes that EAP-FAST complements PEAP as well as LEAP, "bringing together some of the key advantages of LEAP's convenience and flexibility with the password protection tunneling of PEAP". According to Seide, Cisco submitted EAP-FAST to the IETF for inclusion in the 802.1x wireless LAN security protocol that is under development and expects tohave it available for download for free from its Web site by the end of March. Seide said Cisco doesn't intend EAP-FAST as a replacement for LEAP but as an addition to its WLAN security suite of products, which includes PEAP. Cisco also intends to make EAP-FAST available to partners in its Cisco Compatible Extensions (CCX) program, (see story) Seide said. Cisco's CCX wireless LAN chip partners include Intel Corp. and Atheros Communications Inc. Hardware manufacturers that are part of the CCX program include Dell Inc., Hewlett-Packard Co. and Toshiba Corp. The link for this article located at computerworld.com is no longer available. . Explore the innovative WLAN security framework by Cisco that effectively thwarts dictionary attacks.. Wireless Authentication,EAP-FAST,Cisco WLAN Security,Dictionary Attack Protection,Secure Tunneling. . Anthony Pell

Calendar 2 Feb 16, 2004 User Avatar Anthony Pell Network Security
74

WPA: Dictionary Attack Risks Highlighted by ICSA Labs Advisory

A researcher at ICSA Labs has reported that some implementations of Wi-Fi Protected Access (WPA), a standard for cryptography of data on Wi-Fi networks, can be compromised through a dictionary attack. Robert Moskowitz, senior technical director at ICSA Labs, detailed the . . . . A researcher at ICSA Labs has reported that some implementations of Wi-Fi Protected Access (WPA), a standard for cryptography of data on Wi-Fi networks, can be compromised through a dictionary attack. Robert Moskowitz, senior technical director at ICSA Labs, detailed the attack scenario in a paper published yesterday. Not all WPA-based networks are vulnerable. Those most at risk, according to the paper, are the ones that use the "pre-shared key" method for passphrase generation. Most implementations of WPA, in order to make use of the cryptography accessible to unsophisticated users with normal home computing equipment, allow users to enter a common shared phrase into a WPA user interface on the computer. This phrase, along with the SSID, the visible name for the network, is transformed mathematically into a key used by the cryptography routines. Other key management techniques are available to WPA, but these generally require more expensive and complex network management equipment, such as authentication servers. The link for this article located at EWeek is no longer available. . Specific iterations of Wi-Fi Protected Access (WPA) exhibit susceptibility to dictionary assaults, posing significant threats to security.. Wi-Fi Protected Access, WPA Security, Wireless Vulnerabilities, ICSA Labs. . Anthony Pell

Calendar 2 Nov 06, 2003 User Avatar Anthony Pell Network Security
74

ASLEAP Tool Reveals Risks in LEAP Protocol and Password Weaknesses

Joshua Wright, the systems engineer who created a tool that targets wireless LANs protected by Cisco Systems Inc.'s Lightweight Extensible Authentication Protocol (LEAP), said he did so to demonstrate the ease with which dictionary attacks against the protocol can crack user passwords.. . .. Joshua Wright, the systems engineer who created a tool that targets wireless LANs protected by Cisco Systems Inc.'s Lightweight Extensible Authentication Protocol (LEAP), said he did so to demonstrate the ease with which dictionary attacks against the protocol can crack user passwords. Wright said Cisco users should "be aware of the risks that exist by using the LEAP protocol." He said he plans to release the attack tool, which he has dubbed ASLEAP, in February, although he declined to say how he would make it available. The tool uses a challenge-and-response methodology built into LEAP to obtain the information needed to mount a dictionary attack, according to Wright. He then uses a 100GB electronic dictionary that includes every word in various languages to discover passwords, a process that Wright said can be done in a matter of seconds. The dictionary also includes common permutations that end users and IT managers use in their attempts to make passwords attackproof, such as substituting the number zero for the letter O. Wright, who emphasized that his work on ASLEAP has nothing to do with his job at Johnson & Wales College in Providence, R.I., said he told Cisco about the Linux-based attack tool during the summer. Cisco subsequently posted a notice on its Web site about the threat to LEAP. Ron Seide, product line manager at Cisco's wireless business unit, said that when Wright releases ASLEAP and the threats "move to a higher level," the company will be quick to inform users of the protocol. All of article. The link for this article located at ComputerWorld is no longer available. . Emma Lewis underscores the dangers of leveraging the SecureLink protocol through a software she developed for decryptingpasswords.. LEAP Protocol Risks, Dictionary Attack Tool, Wireless Security Insights. . Anthony Pell

Calendar 2 Oct 20, 2003 User Avatar Anthony Pell Network Security
78

Cisco Wireless LAN: Alert on Dictionary Attacks Threatening LEAP Security

The proprietary security system used by Cisco Systems Inc. to protect wireless LANs widely deployed by enterprises can be defeated by a "dictionary attack" designed to crack passwords. To counter the security threat, the company is warning customers to institute strong . . . . The proprietary security system used by Cisco Systems Inc. to protect wireless LANs widely deployed by enterprises can be defeated by a "dictionary attack" designed to crack passwords. To counter the security threat, the company is warning customers to institute strong password policies. Cisco posted a security bulletin on its Web site on Aug. 7 about the vulnerability of its Lightweight Extensible Authentication Protocol (LEAP) to dictionary attacks, according to Ron Seide, product line manager in the company's wireless business unit. In that bulletin, Cisco acknowledged the flaw and said, "As with most password-based authentication algorithms, Cisco LEAP is vulnerable to dictionary attacks. Creating a strong password policy is the most effective way to mitigate against dictionary attacks. This includes using strong passwords and periodically expiring passwords." The link for this article located at ComputerWorld is no longer available. . Cisco has warned about vulnerabilities in its WLAN security that could be vulnerable to dictionary attacks, advising users to adopt strong password practices for better security. Wireless Security, Cisco Systems, Password Policies, WLAN Security, Authentication Methods. . LinuxSecurity.com Team

Calendar 2 Oct 03, 2003 User Avatar LinuxSecurity.com Team Vendors/Products
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150
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[{"id":483,"title":"Self-taught through trial and error","votes":548,"type":"x","order":1,"pct":78.51,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.3,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.87,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.32,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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