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Compression lets attackers tap VoIP calls

2008-06-17 00:00:00 by HASH0x84731b0 in Network World on Security
 
A common compression technique can make Internet telephone calls significantly more susceptible to bugging, according to recent research from Johns Hopkins University
 
Tags: johns hopkins university, common compression technique, recent research, susceptible
 
 
 
 
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Got Entropy ?

2008-04-02 02:55:47 by Erik T. Heidt in Art of Information Security
 
...compression in the hash Check it out at http://gotentropy.artofinfosec.com Can an Attacker Broadcast a Signal to Undermine This Such an attacker could not remove RF noise from the received signal. Our eyes and brains are good at filtering out the noise in the TV video, but there is a lot of it. Part of the noise comes from the atmospheric...
 
Tags: entropy, random, 32-byte random, byte, hardware random, entropy sources, sequence, random sequence, pull entropy
 
 
 
 
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University of Miami reports stolen tapes affecting patients

The Article has images
2008-04-25 15:34:41 by Evan Francen in The Breach Blog
...compression and encoding tools used to write data to the storage tapes For more than a week my team devised a number of methods to extract readable data from the tapes, said Christopher Day, senior vice president of the Secure Information Services group at Terremark. Because of the highly proprietary compression and encoding used in writing...
 
Tags: personal information belongs, personal information, tapes, university, information, financial information, secure information services, data, usable data
 
 
 
 
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Eavesdropping on Encrypted Compressed Voice

2008-06-19 06:27:13 by schneier in Schneier on Security
 
...compression technique, called variable bitrate compression produces different size packets of data for different sounds That happens because the sampling rate is kept high for long complex sounds like "ow", but cut down for simple consonants like "c". This variable method saves on bandwidth, while maintaining sound quality VoIP streams are...
 
Tags: variable, variable method saves, compression technique, technique, john hopkins university, decode entire conversations, complex sounds, sounds, packets
 
 
 
 
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A cryptographic hash function reading guide

2007-11-23 16:01:18 by George Danezis in Light Blue Touchpaper
 
...compression functions. Chapter 3 also quickly presents Floyds cycle finding algorithm to find collisions with negligible storage requirements If your curiosity has not been satisfied, the second stop is Prof. Bart Preneels thesis entitled Analysis and Design of Cryptographic Hash Functions . This work provides a very good overview of the...
 
Tags: function, hash functions, cryptographic hash functions, functions, functions secure, design, hash function design, compression functions, secure hash function
 
 
 
 
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Zune Killer App - Windows Media Center

The Article has images
2007-11-26 21:55:40 by jrjones in Jeff Jones Security Blog
...compression with H.264 video and AAC3 audio, which gets added automatically to my Zune library and can be synced to the device... better together indeed With my Zune 30, this means I can load up about 50 kids movies and TV shows that I've previously recorded for those long road trips and vacations. In fact, I can plug my Zune into the...
 
Tags: zune, apple tv, apple, tv, tv movies, zune software, zune tv comparison, media center, windows media center
 
 
 
 
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Some Burning Logging Questions - Answered!

2008-04-23 16:20:00 by Dr Anton Chuvakin in Anton Chuvakin Blog -
 
...compression you'd get about 60GB of compressed log data per year Store it in RDBMS? Multiple it by 2-3. Have an index? Add about 30 The bottom line is: terabyte is the unit to measure logs Q4: At the organizations that have successfully implemented enterprise-wide logging, how logging impacted network and system performance A4: Too broad a...
 
Tags: data, raw log data, logs compress, logs, analyze unknown logs, unknown, data retrieval commands, measure logs, log data
 
 
 
 
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Terrorism as a Tax

2008-05-12 06:29:47 by schneier in Schneier on Security
 
...compression of civil liberties or the loss of human dignity from being groped in full public view by Transportation Security Administration personnel at the airport or from having to walk barefoot through the metal detector, holding up your beltless pants. This global transaction tax represents the most significant victory of Terror...
 
Tags: tax, security, security risks, security countermeasures, security trade-offs, fear tax falls, security lines, beefed-up security forces, percent decline
 
 
 
 
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Ad-Aware 2008 Now Available!

2008-06-30 15:38:14 by Doug Woodall in The Spyware Biz Blog
 
...compression results in faster product updates for users on all systems. New international network of malware security volunteers submitting samples of the latest malware threats in the wild. Now Available on the SpywareBiz AntiSpyware page. Get it now
 
Tags: rootkit removal system, computer memory, pro versions, malware threats, anti-virus protection, 64-bit platform support, spywarebiz antispyware page, users, faster
 
 
 
 
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Q&A with Sergey Katsev of Coyote Point Systems

2008-08-05 16:34:35 by Louis DiMeglio in ScienceLogic
 
...compression technology . Finally, were helping logistics in the NOC by allowing a physical separation between systems located in the NOC and those in an emergency rack outside of the NOC. If either of these two locations were to fail, the network will continue operating without a glitch ScienceLogic: Are there any special considerations for...
 
Tags: katsev, sergey katsev, interopnet, coyote, systems, sciencelogic, sciencelogic em7 appliances, network, client traffic