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Researchers have some good and bad news about the availability of secure e-mail. Use of STARTTLS and three other security extensions has surged in recent months, but their failure rate remains high, in large part because of active attacks that downgrade encrypted connections to unencrypted ones. . That conclusion, reached in a recently published research paper, means that a significant chunk of e-mail continues to be transmitted in plaintext and with no mechanism for verifying that a message hasn't been tampered with while it travels from sender to receiver. The downgrades are largely made possible by the simple mail transfer protocol used by many e-mail services. . Studies show that depending on STARTTLS for email security presents continuing vulnerabilities, underscoring serious plaintext exchanges.. STARTTLS Security, Email Encryption, Data Protection Techniques. . LinuxSecurity.com Team
Two researchers with the University of Leuven have developed a new, more practical attack technique that exposes weaknesses in the RC4 encryption algorithm. . RC4 is one of the encryption techniques supported by HTTPS protocol, which ensures the security of web communications, and Mathy Vanhoef and Frank Piessens indicated that their technique is so effective that users may want to consider no longer using the algorithm. The link for this article located at SC Magazine is no longer available. . Experts have uncovered an innovative method that capitalizes on vulnerabilities within the RC4 encryption standard implemented in secure web communications.. RC4 Attack, Web Security, Encryption Techniques, Cryptanalysis. . LinuxSecurity.com Team
Hackers seeking source code from Google, Adobe and dozens of other high-profile companies used unprecedented tactics that combined encryption, stealth programming and an unknown hole in Internet Explorer, according to new details released by the anti-virus firm McAfee.. The link for this article located at Wired is no longer available. . The link for this article located at Wired is no longer available.. hackers, seeking, source, google, adobe, dozens, other, high-profile, companies, unpre. . LinuxSecurity.com Team
Quantum cryptography, the most secure method of transmitting data, has taken a step closer to mainstream viability with a technique that simplifies the distribution of keys. Researchers at the National Institute of Standards and Technology claim that the new "quantum key distribution" method minimises the required number of detectors, the most costly components in quantum cryptography. What is your opinion on the state of computer cryptography. I am glad to see researching working on improving the security of cryptography. . The link for this article located at vnunet is no longer available. . The link for this article located at vnunet is no longer available.. quantum, cryptography, secure, method, transmitting, taken, closer, mainst. . LinuxSecurity.com Team
In today’s world we are constantly reminded of the day to day dangers that exist in our society. According to statistics people are becoming the victims of Identity Theft at an alarming rate, it is estimated that 246,570 people had their identities stolen in 2004 alone. Businesses are taking every precaution imaginable to protect the privacy of their consumers. We live in an electronic age, things like paying bills, shopping, ordering clothing, and banking are done online. Yes; it is a very convenient way to do business! It is also very dangerous! . The preferred method of protecting information is a combination of encryption, tunneling, packet filtering, encapsulation, and firewall use. The link for this article located at InfoSec Writers is no longer available. . Investigate strategies for protecting your information using encryption techniques and firewalls to achieve strong cybersecurity.. Network Hardening, Data Protection, Encryption Techniques, Firewall Security. . Brittany Day
With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wondering exactly what these things are: They form the underpinning of much of our electronic infrastructure, and in this Guide we'll try to give an overview of what they are and how to understand them in the context of the recent developments. . . .. With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wondering exactly what these things are: They form the underpinning of much of our electronic infrastructure, and in this Guide we'll try to give an overview of what they are and how to understand them in the context of the recent developments. But note: though we're fairly strong on security issues, we are not crypto experts. We've done our best to assemble (digest?) the best available information into this Guide, but we welcome being pointed to the errors of our ways. * What is a cryptographic hash? A "hash" (also called a "digest", and informally a "checksum") is a kind of "signature" for a stream of data that represents the contents. The closest real-life analog we can think is "a temper-evident seal on a software package": if you open the box (change the file), it's detected. Let's first see some examples of hashes at work. Many Unix and Linux systems provide the md5sum program, which reads a stream of data and produces a fixed, 128-bit number that summarizes that stream using the popular "MD5" method. Here, the "streams of data" are "files" (two of which we see directly, plus one that's too large to display). The link for this article located at unixwiz.net is no longer available. . With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wo. recent, weaknesses, common, security, algorithms, sha-0). . LinuxSecurity.com Team
In today's world, communication has broken all previous time and distance limits. Now you can talk with someone in real-time no matter how far away he is. That advantage has also brought some major problems with itself. First, it is hard to verify other persons identity with 100% certainty and second, we can't know if there is a third party between who reads our correspondence. Fortunately for us something called public key cryptography was invented. . . .. In today's world, communication has broken all previous time and distance limits. Now you can talk with someone in real-time no matter how far away he is. That advantage has also brought some major problems with itself. First, it is hard to verify other persons identity with 100% certainty and second, we can't know if there is a third party between who reads our correspondence. Fortunately for us something called public key cryptography was invented. The link for this article located at LinuxGazzette is no longer available. . In today's world, communication has broken all previous time and distance limits. Now you can talk w. today's, world, communication, broken, previous, distance, limits. . LinuxSecurity.com Team
All of the cypher systems we have looked at so far have been single-key character cyphers. By this, we mean that the same key which is used to encrypt the plaintext into the ciphertext is used to recover the plaintext from . . . . All of the cypher systems we have looked at so far have been single-key character cyphers. By this, we mean that the same key which is used to encrypt the plaintext into the ciphertext is used to recover the plaintext from the ciphertext, and the cypher operates on only one character at a time. In these discussions the plaintext character space is taken to be the ASCII character set, as is the ciphertext character space. The key space is not necessarily the ASCII character set, but is a function, such that p=D(C(p)), where p is the plaintext, C is the encryption algorithm and key, and D is the decryption algorithm and key. Clearly, D is the inverse operation of C. The link for this article located at SierraTimes is no longer available. . All of the cypher systems we have looked at so far have been single-key character cyphers. By this, . cypher, systems, looked, single-key, character, cyphers. . LinuxSecurity.com Team
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